Got timing?
01-27-2006, 06:49 PM
#1
Got timing?
Got the new JWT chip. Z32MAF, 740cc inj, 7500rev, 100oct race gas 
Timing looks like this
rpm timing
4038 +14
4350 +14
4675 +14
5000 +14
5488 +16
5875 +18
6500 +18
~4.7-4.8 maf V ~14psi
I was running my DIY alch/water injection as a safety measure and the J&S was quiet, no detonation. I will disconnect the A/W inj tomorrow and test again. AFR was scarey at ~13:1 at times, 100oct can be run leaner, im running 93oct. Perhaps the A/W inj is screwing with the wide band OR maybe the chip needs a few hundred highway miles to trim out the fuel tables. When I did the first runs I only drove a few miles then blasted it. Worst case I can add fuel. The timing JWT is giving is consistant with good 300zxTT's tunes so I guess that will work for now. Much better than the +10 degrees it was before. I was testing this stuff in 4th (3rd is useless on streets) and it feels much smoother, if not faster too. Ive gotta test the new 7500 limit too
Timing looks like this
rpm timing
4038 +14
4350 +14
4675 +14
5000 +14
5488 +16
5875 +18
6500 +18
~4.7-4.8 maf V ~14psi
I was running my DIY alch/water injection as a safety measure and the J&S was quiet, no detonation. I will disconnect the A/W inj tomorrow and test again. AFR was scarey at ~13:1 at times, 100oct can be run leaner, im running 93oct. Perhaps the A/W inj is screwing with the wide band OR maybe the chip needs a few hundred highway miles to trim out the fuel tables. When I did the first runs I only drove a few miles then blasted it. Worst case I can add fuel. The timing JWT is giving is consistant with good 300zxTT's tunes so I guess that will work for now. Much better than the +10 degrees it was before. I was testing this stuff in 4th (3rd is useless on streets) and it feels much smoother, if not faster too. Ive gotta test the new 7500 limit too
01-28-2006, 05:12 AM
#6
01-31-2006, 08:44 AM
#7
The fuel in the new chip is way to lean even for 100oct, 13:1afr. Timing from what I can tell is a little soft. So I sent JWT this e-mail to see what they think...
Hi Ben,
I put in my chip this weekend and did some driving, testing and data logging. Although this is a supposed to be a 100oct I am running 93oct to test it before I really beat on it. At 4.8v at the MAF (Z32) with 14psi of boost I had no detonation at all. The timing under boost comes in at 14 degrees advanced at ~4000rpms and runs up to 18 degrees advanced in the higher RPM's. This seems a bit soft for a 100oct tune?
The AFR is also considerably leaer then I would think would be safe for 100oct. My wideband shows that under the same conditions as above the AFR to be 13:1 (+/- 0.2). Is this a little too lean?
Could you please check with Clark on this for me.
Regards,
Matt
Hi Ben,
I put in my chip this weekend and did some driving, testing and data logging. Although this is a supposed to be a 100oct I am running 93oct to test it before I really beat on it. At 4.8v at the MAF (Z32) with 14psi of boost I had no detonation at all. The timing under boost comes in at 14 degrees advanced at ~4000rpms and runs up to 18 degrees advanced in the higher RPM's. This seems a bit soft for a 100oct tune?
The AFR is also considerably leaer then I would think would be safe for 100oct. My wideband shows that under the same conditions as above the AFR to be 13:1 (+/- 0.2). Is this a little too lean?
Could you please check with Clark on this for me.
Regards,
Matt
01-31-2006, 11:33 AM
#8
Originally Posted by MardiGrasMax
The fuel in the new chip is way to lean even for 100oct, 13:1afr. Timing from what I can tell is a little soft. So I sent JWT this e-mail to see what they think...
Hi Ben,
I put in my chip this weekend and did some driving, testing and data logging. Although this is a supposed to be a 100oct I am running 93oct to test it before I really beat on it. At 4.8v at the MAF (Z32) with 14psi of boost I had no detonation at all. The timing under boost comes in at 14 degrees advanced at ~4000rpms and runs up to 18 degrees advanced in the higher RPM's. This seems a bit soft for a 100oct tune?
The AFR is also considerably leaer then I would think would be safe for 100oct. My wideband shows that under the same conditions as above the AFR to be 13:1 (+/- 0.2). Is this a little too lean?
Could you please check with Clark on this for me.
Regards,
Matt
Hi Ben,
I put in my chip this weekend and did some driving, testing and data logging. Although this is a supposed to be a 100oct I am running 93oct to test it before I really beat on it. At 4.8v at the MAF (Z32) with 14psi of boost I had no detonation at all. The timing under boost comes in at 14 degrees advanced at ~4000rpms and runs up to 18 degrees advanced in the higher RPM's. This seems a bit soft for a 100oct tune?
The AFR is also considerably leaer then I would think would be safe for 100oct. My wideband shows that under the same conditions as above the AFR to be 13:1 (+/- 0.2). Is this a little too lean?
Could you please check with Clark on this for me.
Regards,
Matt
02-01-2006, 08:43 AM
#11
Tell them you want 25degrees across the board, then just pull what you can't use with the J&S or if you need more refinement an eManage blue which can be found for cheap.
You know what you're doing, they don't, so I'd go eManage. I don't remember the bore size of the VG30DETT, however assuming the VQ35 bore is larger, you should be able to handle more timing anyways.
You know what you're doing, they don't, so I'd go eManage. I don't remember the bore size of the VG30DETT, however assuming the VQ35 bore is larger, you should be able to handle more timing anyways.
02-01-2006, 09:55 AM
#12
good luck with this one, I'll await JWT's response. Im guessing it will be something like this:
Matt,
The tune is for 100 octane only which is why you are getting these results. Run 100 octane and retest, our test car ran perfect with this same chip and wasn't lean at all.
Reguards,
Idiots
Matt,
The tune is for 100 octane only which is why you are getting these results. Run 100 octane and retest, our test car ran perfect with this same chip and wasn't lean at all.
Reguards,
Idiots
02-01-2006, 12:21 PM
#13
Haha that rings true...
But try dealing with Greddy USA if you want horrible customer service. At least you can get a response out of JWT even if it's the standard fare. At Greddy you can't even get hold of anyone useful anymore and they have NEVER returned emails, phone calls etc. I wish I knew Japanese I'd go directly to Japan...
But try dealing with Greddy USA if you want horrible customer service. At least you can get a response out of JWT even if it's the standard fare. At Greddy you can't even get hold of anyone useful anymore and they have NEVER returned emails, phone calls etc. I wish I knew Japanese I'd go directly to Japan...
02-01-2006, 12:32 PM
#14
VG30 has a 87mm bore vs the VQ35 bore of 95.5mm.
What test car? They just pull the numbers out of their A$$. Once again JWT proves to me they just shoot in the dark with the VQ tuning.
Matt,
The tune is for 100 octane only which is why you are getting these results. Run 100 octane and retest, our test car ran perfect with this same chip and wasn't lean at all.
Reguards,
Idiots
The tune is for 100 octane only which is why you are getting these results. Run 100 octane and retest, our test car ran perfect with this same chip and wasn't lean at all.
Reguards,
Idiots
02-01-2006, 08:21 PM
#15
Moderator who thinks he is better than us with his I30
iTrader: (8)
Join Date: May 2002
Posts: 9,335
They have told me a few times they have a turbo maxima onsite daily which these programs are built around.....I highly doubt that, but that is what they say.
Matt, why don't you just turn up your base fuel pressue or use emanage to get your AFR's into the high 11's low 12's and be done with JWT.
Matt, why don't you just turn up your base fuel pressue or use emanage to get your AFR's into the high 11's low 12's and be done with JWT.
02-02-2006, 09:22 PM
#17
Supporting Maxima.org Member
iTrader: (3)
Join Date: Mar 2002
Location: Fort Collins, Colorado
Posts: 1,035
Cool! Surprised you stuck with JWT. Doesn't the EMU control timing ... thought I read some where that it did now? I haven't been running this much timing on my AEM to make sure it is stable, I think I am to the point where I can start really putting more timing in now with the nice 800CC injectors in it!
02-03-2006, 06:06 AM
#18
800CC OMG!!!
For $100 I couldnt go wrong. I would realy like standalone but I will save that expense for a RWD VQ35.
My Guess is I can take 2-4 more degrees with 93 oct and 4-6 more with water injection. Now as I ramp up the boost to higher levels this will surely be a bit lower.
For $100 I couldnt go wrong. I would realy like standalone but I will save that expense for a RWD VQ35.
My Guess is I can take 2-4 more degrees with 93 oct and 4-6 more with water injection. Now as I ramp up the boost to higher levels this will surely be a bit lower.
02-03-2006, 06:38 AM
#19
Supporting Maxima.org Member
iTrader: (3)
Join Date: Mar 2002
Location: Fort Collins, Colorado
Posts: 1,035
Yup, I guess not ... you should give me a call some time. I found a cheaper engine management system. Doesn't have as many o/p as AEM but for air fuel spark would be wonderful! Also no wasted spark! Lastly, transferable to a RWD VQ35 or any other car (less than 12 cylinder) for that matter ... you can even put it in a saturn! Hehe!
I haven't looked too much into this though since not much interest on these boards for a standalone. I am half surprised people don't want full control, I am sure Traction control functionality would help at the track, oh well!
I haven't looked too much into this though since not much interest on these boards for a standalone. I am half surprised people don't want full control, I am sure Traction control functionality would help at the track, oh well!
02-09-2006, 02:08 PM
#21
Ben Responds
What I got back from Ben, Looks like they can help, time to do some good data logs!
---------------------
Hi Matt,
I checked with our engineer and he had some questions about your info. He also mentioned that we might be able to do a test EPROM and send it out to you for you to test and evaluate the changes.
1) How much more timing is needed? When do you need the timing changed, what RPM range, what MAF voltage range?
2) When does the A/F need to be leaner? At what RPM and MAF voltage ranges?
With accurate information (using an accurate wide band type A/F ratio meter) (I forgot what type you have,) and knowing at what RPM and what MAF voltage you need the changes, we can likely get the program just where you need it.
Best regards,
Ben Pila (Technical and Sales Support)
Jim Wolf Technology, Inc.
212 Millar Ave
El Cajon, CA 92020-4219
(619) 442-0680 Mon-Fri 8am-5pm PST
(619) 579-8160 24 hour fax
www.jimwolftechnology.com
---------------------
Hi Matt,
I checked with our engineer and he had some questions about your info. He also mentioned that we might be able to do a test EPROM and send it out to you for you to test and evaluate the changes.
1) How much more timing is needed? When do you need the timing changed, what RPM range, what MAF voltage range?
2) When does the A/F need to be leaner? At what RPM and MAF voltage ranges?
With accurate information (using an accurate wide band type A/F ratio meter) (I forgot what type you have,) and knowing at what RPM and what MAF voltage you need the changes, we can likely get the program just where you need it.
Best regards,
Ben Pila (Technical and Sales Support)
Jim Wolf Technology, Inc.
212 Millar Ave
El Cajon, CA 92020-4219
(619) 442-0680 Mon-Fri 8am-5pm PST
(619) 579-8160 24 hour fax
www.jimwolftechnology.com
02-09-2006, 05:03 PM
#22
Mardi,
Don't make me buy you an EU...
This mail-order fudge map scenario has to be getting annoying especially for $100/chip, right?
Do you have a laptop fear fetish I should know about?
Just playing Mardi...someday you'll take the plunge and I'm SCARED of what you'll be running when you're not relying on JWT to guesstimate your tunes.
Don't make me buy you an EU...
This mail-order fudge map scenario has to be getting annoying especially for $100/chip, right?
Do you have a laptop fear fetish I should know about?
Just playing Mardi...someday you'll take the plunge and I'm SCARED of what you'll be running when you're not relying on JWT to guesstimate your tunes.
02-10-2006, 05:34 AM
#25
Is timing advance 100% cake now on the EU? Is the revlimit advance 100% cake now? I really dont have the time to puttz around with figuring out how to get these features to work. If they get the crank signal to work then I'm in. Until then I'm out.
It sounds like I have JWTs attention and they will give a custom tune based on my feedback of the current MAP. With data logs its an educated guess atleast.
I have the EB wired in their.
It sounds like I have JWTs attention and they will give a custom tune based on my feedback of the current MAP. With data logs its an educated guess atleast.
I have the EB wired in their.
02-10-2006, 08:20 AM
#27
Nothing is 100% proven, but evidence has shown both work rather then doesn't work.
At worst you just keep the JWT ECU for the rev-limiter and to idle those HUGE injectors. Use the EU for fuel/timing/2-step launch/relay control/eliminating the MAF or run larger MAF/2nd maps for N20/auto-tune/water injection/individual cylinder fuel or timing/AWESOME logging/etc..
Then when/if Greddy releases the crank input add on module, you can sell the JWT. You don't need the crank input EXCEPT to monitor/log timing.
At worst you just keep the JWT ECU for the rev-limiter and to idle those HUGE injectors. Use the EU for fuel/timing/2-step launch/relay control/eliminating the MAF or run larger MAF/2nd maps for N20/auto-tune/water injection/individual cylinder fuel or timing/AWESOME logging/etc..
Then when/if Greddy releases the crank input add on module, you can sell the JWT. You don't need the crank input EXCEPT to monitor/log timing.
Originally Posted by MardiGrasMax
Is timing advance 100% cake now on the EU? Is the revlimit advance 100% cake now? I really dont have the time to puttz around with figuring out how to get these features to work. If they get the crank signal to work then I'm in. Until then I'm out.
It sounds like I have JWTs attention and they will give a custom tune based on my feedback of the current MAP. With data logs its an educated guess atleast.
I have the EB wired in their.
It sounds like I have JWTs attention and they will give a custom tune based on my feedback of the current MAP. With data logs its an educated guess atleast.
I have the EB wired in their.
02-10-2006, 04:40 PM
#32
I'm torn on whats next. Ive got a total budget of 40k. I would like somthing that is not boy racer'ish, 11sec 1/4 mile on street tires, civil and reliable enough to drive everyday and take clients out in, these are must haves. The wifey likes convertables, and I would like it to perhaps be a collectable in 20years, these are somewhat flexable. Used or new, two or four doors. I am considering...
Used Corvette
New or Used GTO
Used Porche
Used M5
Used A6 2.7TT
Used AMG Mercedes
Used or New G35 Sedan or Coupe
Used or new 350Z
Old muscle car/hotrod
Sort of a wide spectrum of cars but thats the direction Im heading. I should be ready to by by the end of this year and parting the Max shortly after that
Used Corvette
New or Used GTO
Used Porche
Used M5
Used A6 2.7TT
Used AMG Mercedes
Used or New G35 Sedan or Coupe
Used or new 350Z
Old muscle car/hotrod
Sort of a wide spectrum of cars but thats the direction Im heading. I should be ready to by by the end of this year and parting the Max shortly after that
02-10-2006, 04:47 PM
#33
Supporting Maxima.org Member
iTrader: (3)
Join Date: Mar 2002
Location: Fort Collins, Colorado
Posts: 1,035
Stay away from VW/Audi/Porsche unless you like fixing **** that breaks all the time! I just drove my co-worker's 2000 M5 and that wasn't bad at all just stock. Dumped a lot of $$$ in my IS so far.
You're wise staying away from the EMU for now, no sense in re-inventing stuff if it's your last season
No Lexus stuff for you huh? Toyota makes good stuff! I am keeping my Max, it has never let me down yet!
You're wise staying away from the EMU for now, no sense in re-inventing stuff if it's your last season
No Lexus stuff for you huh? Toyota makes good stuff! I am keeping my Max, it has never let me down yet!
02-10-2006, 06:56 PM
#34
94-96 Impala SS...
You can find a low mileage, ie <20K miles, for under $20K if you look. They are SUPER modable, since they have the LT1.
Here's a '96 w/9K for $18K:
http://www.cars.com/go/search/previe...adExists=false
Here's a '95 w/17K for $20K:
http://www.cars.com/go/search/detail...7&aff=national
Here's a '94 w/4,536 for $23K:
http://www.cars.com/go/search/detail...7&aff=national
Here's a '96 w/15K for $19.5K:
http://www.cars.com/go/search/detail...7&aff=national
You can find a low mileage, ie <20K miles, for under $20K if you look. They are SUPER modable, since they have the LT1.
Here's a '96 w/9K for $18K:
http://www.cars.com/go/search/previe...adExists=false
Here's a '95 w/17K for $20K:
http://www.cars.com/go/search/detail...7&aff=national
Here's a '94 w/4,536 for $23K:
http://www.cars.com/go/search/detail...7&aff=national
Here's a '96 w/15K for $19.5K:
http://www.cars.com/go/search/detail...7&aff=national
Thread
Thread Starter
Forum
Replies
Last Post
sctludwig
3rd Generation Maxima (1989-1994)
8
09-01-2022 01:32 PM
kjlouis
4th Generation Maxima (1995-1999)
12
10-03-2015 05:29 AM
trungg86
4th Generation Maxima (1995-1999)
7
09-04-2015 04:58 AM