Dyno tune after header install
#1
Dyno tune after header install
I just installed the Hotshot headers on my 02. I've read here that the ECU adjusts to them over the next week or so producing more power.
I already have the SAFC2 wired in and tuned for my intake, Y-pipe, and B-pipe.
My question is, should I wait a week or two before dyno tuning or can I do it sooner?
BTW, I'll be selling my Warpspeed Y-pipe (less than a year old) if anyone is interrested.
I already have the SAFC2 wired in and tuned for my intake, Y-pipe, and B-pipe.
My question is, should I wait a week or two before dyno tuning or can I do it sooner?
BTW, I'll be selling my Warpspeed Y-pipe (less than a year old) if anyone is interrested.
#3
Thanks, the install went pretty smoothly. I installed a new Fidanza flywheel and stage 3 clutch while I was at it. It was a lot of work for one day with just jackstands and hand tools but it was worth it.
I'll take some pics later and do a post later. I have access to a lift at the dealership where I sell cars. While I can't work on my car there, I can lift it for some quick pics. I'll do it Sunday when I'm working but the shop is closed.
I will say that the fit is great. They went in with no modification and there is no rubbing or anything. They aren't in the way of the oil drain plug either.
I'll take some pics later and do a post later. I have access to a lift at the dealership where I sell cars. While I can't work on my car there, I can lift it for some quick pics. I'll do it Sunday when I'm working but the shop is closed.
I will say that the fit is great. They went in with no modification and there is no rubbing or anything. They aren't in the way of the oil drain plug either.
#6
i should really know this but let me ask anyway....for example ive got some typical bolt ons, intake/y pipe/catback, what could i gain from getting the asfc2? as i understand it can adjust the a/f ratio, inturn making for more optimal engine operation/getting most from ur mods? is that basically it? and what kind of actual gains (number wise) will people get using the asfc2?
#7
Originally Posted by super6
i should really know this but let me ask anyway....for example ive got some typical bolt ons, intake/y pipe/catback, what could i gain from getting the asfc2? as i understand it can adjust the a/f ratio, inturn making for more optimal engine operation/getting most from ur mods? is that basically it? and what kind of actual gains (number wise) will people get using the asfc2?
#8
Originally Posted by Deckdout2
How's your new clutch and flywheel? What are the differences between the new setup and stock that you have noticed? Nice work on some major modding.
Interested in knowing more about the clutch and flywheel too....
#10
Originally Posted by super6
i should really know this but let me ask anyway....for example ive got some typical bolt ons, intake/y pipe/catback, what could i gain from getting the asfc2? as i understand it can adjust the a/f ratio, inturn making for more optimal engine operation/getting most from ur mods? is that basically it? and what kind of actual gains (number wise) will people get using the asfc2?
#11
The clutch and flywheel are great. There is a back story as some here may know.
I first installed the Fidanza flywheel and Clutchmaster stage 3 a couple months ago. I was geting a horible grinding when starting the car and a bad vibration at idle or reving it in neutral.
I pulled it back out and reinstalled the stock flywheel and pressure plate with just the new disk. I measured the ring gear against the stock flywheel and found the Fidanza was about half a centimeter smaller. The starter gear was only making contact by about a milimeter. That was causing it to knock chunks of the ring gear off. The bell housing was full of metal shavings.
After some discussion with Fidanza I sent it back and they installed a proper size ring gear. They said the vibration was probobly the clutch and offered to balance it for free even though it wasn't their product. It came back with several holes drilled to remove material to balance it.
After the first installation there was a good bit of chatter but that's natural for a kevlar disk till it breaks in. When I reinstalled the stock pieces with the same kevlar disk the chatter was still there. I drove it for a few months waiting for the headers to come so I could do it all together.
During that time the chatter slowly got better but was still very noticeable.
Now with the new pieces back in the chatter is gone. I think part of the chatter was from the stock dual mass flywheel and the sprung clutch disk both moving. Now that I have a solid flywheel everything seems smooth. The peddle pressure a bit stiffer than I like but that's a matter of preference. It seems to be working fine.
Sorry for the long reply but I've had a lot of drama with a simple clutch job. The moral is, with aftermarket pieces always measure before instaling and balance anything that spins. Three clutch jobs on jackstands with hand tools was two too many.
I do have to add that Fidanza proved to be a stand up company by fixing their mistake and even correcting the mistake of another company. Wayne was always there when I called and got back to me when he said he would.
I first installed the Fidanza flywheel and Clutchmaster stage 3 a couple months ago. I was geting a horible grinding when starting the car and a bad vibration at idle or reving it in neutral.
I pulled it back out and reinstalled the stock flywheel and pressure plate with just the new disk. I measured the ring gear against the stock flywheel and found the Fidanza was about half a centimeter smaller. The starter gear was only making contact by about a milimeter. That was causing it to knock chunks of the ring gear off. The bell housing was full of metal shavings.
After some discussion with Fidanza I sent it back and they installed a proper size ring gear. They said the vibration was probobly the clutch and offered to balance it for free even though it wasn't their product. It came back with several holes drilled to remove material to balance it.
After the first installation there was a good bit of chatter but that's natural for a kevlar disk till it breaks in. When I reinstalled the stock pieces with the same kevlar disk the chatter was still there. I drove it for a few months waiting for the headers to come so I could do it all together.
During that time the chatter slowly got better but was still very noticeable.
Now with the new pieces back in the chatter is gone. I think part of the chatter was from the stock dual mass flywheel and the sprung clutch disk both moving. Now that I have a solid flywheel everything seems smooth. The peddle pressure a bit stiffer than I like but that's a matter of preference. It seems to be working fine.
Sorry for the long reply but I've had a lot of drama with a simple clutch job. The moral is, with aftermarket pieces always measure before instaling and balance anything that spins. Three clutch jobs on jackstands with hand tools was two too many.
I do have to add that Fidanza proved to be a stand up company by fixing their mistake and even correcting the mistake of another company. Wayne was always there when I called and got back to me when he said he would.
#12
ive heard many aftermarket clutch stories, i know ill need to replace mine w/in next year likely and i was going to go with an aftermarket clutch/flywheel, but with all these stories ill be safe and go stock, cant imagine doing such a big job more than once.
#13
Oh yeah, the S-AFC2.
I wired it in a while back not expecting to gain much with only the intake/exhaust. I knew headers were in the future and I would probobly need it so I did it. I was very impressed with the gains.
This dyno is before the headers. At the time the car had PR CAI, Warpapeed Y and B pipe and 17 degree timing advance. As you can see the car was running very rich. Especially in the higher RPM range.
As puppetmaster said, some cars need AFR tuning after being modded and some don't. Mine is probobly a more extreme case because I haven't heard of others having these kind of results from tuning. Especially with so few mods. I can't wait to have it done again with the headers on.
I wired it in a while back not expecting to gain much with only the intake/exhaust. I knew headers were in the future and I would probobly need it so I did it. I was very impressed with the gains.
This dyno is before the headers. At the time the car had PR CAI, Warpapeed Y and B pipe and 17 degree timing advance. As you can see the car was running very rich. Especially in the higher RPM range.
As puppetmaster said, some cars need AFR tuning after being modded and some don't. Mine is probobly a more extreme case because I haven't heard of others having these kind of results from tuning. Especially with so few mods. I can't wait to have it done again with the headers on.
#14
Nice improvement after tuning, and no, you're not the only one.
MadMaxNH gained about 14 whp as well from tuning and I think he just had intake, cat-back, and UDP, if I recall correctly:
http://forums.maxima.org/showthread.php?t=409180
Can't wait to see the header dynos...
MadMaxNH gained about 14 whp as well from tuning and I think he just had intake, cat-back, and UDP, if I recall correctly:
http://forums.maxima.org/showthread.php?t=409180
Can't wait to see the header dynos...
#15
Btw, thanks for the clutch/flywheel comments, that's something that I'll be looking into come the spring/summer, so I might hit ya up with more questions about the flywheel then. Thanks.
#17
I'm glad you've got the problems corrected. How about drivability? What are some of the differences in driving with stock vs with this setup? I'm sure your revs are as fast as well as they drop. Do you think you've gained anything from this setup? What were some of your conclusions in your research for going with the Fidanza and Clutchmasters? Sorry for the 20 questions, I'm doing some experienced comparison research for myself against other drivers with different setups.
#18
Originally Posted by Deckdout2
I'm glad you've got the problems corrected. How about drivability? What are some of the differences in driving with stock vs with this setup? I'm sure your revs are as fast as well as they drop. Do you think you've gained anything from this setup?
#19
Originally Posted by Deckdout2
I'm glad you've got the problems corrected. How about drivability? What are some of the differences in driving with stock vs with this setup? I'm sure your revs are as fast as well as they drop. Do you think you've gained anything from this setup? What were some of your conclusions in your research for going with the Fidanza and Clutchmasters? Sorry for the 20 questions, I'm doing some experienced comparison research for myself against other drivers with different setups.
The Clutchmaster stage 3 is fine now that it is balanced. I probobly wouldn't go with them again though. A stage 1 or 2 would have been fine.
I upgraded because the stock unit started slipping at the track with drag radials. That was with 90K on it.
#20
Originally Posted by Puppetmaster
I wonder if any of the possible "gains" from the lighter flywheel will show up on the dyno. The weight reduction going from the OEM 32 lbs to the 13 lbs of the Fidanza is pretty significant. That's over 50% less weight, so I'm guessing revs drop extremely quickly.
The gains will be impossible to show since the headers went on at the same time.
#21
Originally Posted by Derrick2k2SE
The gains will be impossible to show since the headers went on at the same time.
#23
I just made an appt to dyno tune on Tuesday. Same place that did the last one so the #s should be accurate to compare. I'll post the results Tuesday night in a new thread.
#24
Originally Posted by Derrick2k2SE
I just made an appt to dyno tune on Tuesday. Same place that did the last one so the #s should be accurate to compare. I'll post the results Tuesday night in a new thread.
#25
Originally Posted by Puppetmaster
I'm sure you already know this, but make sure you get the run files... and if ya don't mind, I'd love to get a copy of the files too.
#28
Originally Posted by Deckdout2
Let's be honest, the interest is for our own benefit also.
#29
Last time I didn't get the files. I didn't know.
Do you need some software to view them? I don't know much about it.
Sharing this stuff is the least I can do. Most of the research for my mods has come from the Org. Plus it's fun. Why modify cars if not to show them off and talk about them. It's not like the extra power is going to get me to work any faster.
Do you need some software to view them? I don't know much about it.
Sharing this stuff is the least I can do. Most of the research for my mods has come from the Org. Plus it's fun. Why modify cars if not to show them off and talk about them. It's not like the extra power is going to get me to work any faster.
#30
Originally Posted by Derrick2k2SE
Last time I didn't get the files. I didn't know.
Do you need some software to view them? I don't know much about it.
Do you need some software to view them? I don't know much about it.
http://www.dynojet.com/downloads/software.php
I guess you can either bring a flash/floppy or just have em email you the run files. Since you're paying for the runs, I'm sure they have to let you get the files somehow.
Originally Posted by Derrick2k2SE
Sharing this stuff is the least I can do. Most of the research for my mods has come from the Org. Plus it's fun. Why modify cars if not to show them off and talk about them. It's not like the extra power is going to get me to work any faster.
#33
Originally Posted by Puppetmaster
Nice improvement after tuning, and no, you're not the only one.
MadMaxNH gained about 14 whp as well from tuning and I think he just had intake, cat-back, and UDP, if I recall correctly:
http://forums.maxima.org/showthread.php?t=409180
Can't wait to see the header dynos...
MadMaxNH gained about 14 whp as well from tuning and I think he just had intake, cat-back, and UDP, if I recall correctly:
http://forums.maxima.org/showthread.php?t=409180
Can't wait to see the header dynos...
http://forums.maxima.org/showthread.php?t=391741
#35
Originally Posted by CoolMax
this might help too...
http://forums.maxima.org/showthread.php?t=391741
http://forums.maxima.org/showthread.php?t=391741
http://forums.maxima.org/showthread.php?t=484202
Thread
Thread Starter
Forum
Replies
Last Post
MaxLife17
8th Generation Maxima (2016-)
43
06-27-2019 01:37 PM