351 FWHP, 332 ft/lb SC'd 4.5 Gen Auto @9psi
12-08-2010, 08:37 PM
#1
351 FWHP, 332 ft/lb SC'd 4.5 Gen Auto @9psi
Well I took the car to the dyno today after getting everything installed. I don't have the run files yet; only have 2 print-outs they gave me. First run, the blue line, fuel pressure was a little wacky and my FMU wasn't helping. AFR's were in the 8-9 range 
We dialed back the pressure and dropped the rise rate several times, which didn't help much at all. Eventually we came to the conclusion that even with the FMU dialed all the way out (giving a 2:1 rise rate), it was still giving waaay too much fuel (i think it was 5-6 pulls till we did this).
We decided to unhook the FMU, and just use the VAFC to add fuel up top, and the thing sang like you wouldn't believe. We raised the base fuel pressure from 30psi to 37-38psi, and sans the FMU, the numbers jumped from mid 200's to low 300's and the AFR's were actually registering
. After some fine tuning with the VAFC here's the final numbers (corrected and uncorrected). I will say, the sheet doesn't show the highest numbers of the day (based on the couple video clips I shot - see below). Our only problem today was the speed limiter. Couldn't make a single full pull in 3rd gear as the speed limiter would cut in around 5.7-5.9k RPM (damn GXE's - don't let the screen name fool you). I'm betting there's another 5-20hp waiting up top (and my last PSI...), each pull was still building power up until the speed limiter fuel cut started...
Power-train details:
'95 Auto 4.5 gen
13k mile '06 3.5L,
Stillen/Matty V2 Supercharger kit 3.25 (10psi) pulley,
600cc Deatschwerks injectors,
Synapse FPR/FMU,
Walbro 255,
Z32 MAF,
VAFC-2
Dyno Sheets:
*Notice, Analog 1 is boost in PSI, smoothing set to "0", very good tune and combination of parts*
Uncorrected:
SAE Corrected:
Dyno Video's:
Highest Torque I videoed, peak boost was 8.43psi...
Highest HP I remember seeing is in this Video (SAE corrected). Not entirely sure why the torque is so much lower on this particular pull. If i had to hazard a guess, I would say belt slip (since there is a "hump" near the speed limiter on the boost line).
You can check out my YouTube channel for a couple more video's:
http://www.youtube.com/user/MadMAXSE
Overall, I'm very pleased. I'm betting if the car were a manual, I would be in the 380ish range. Going to the Rock on Saturday (assuming everybody doesn't bail...) so we shall see what she can do out there this weekend.
...need to figure out the best way to get through first gear
We dialed back the pressure and dropped the rise rate several times, which didn't help much at all. Eventually we came to the conclusion that even with the FMU dialed all the way out (giving a 2:1 rise rate), it was still giving waaay too much fuel (i think it was 5-6 pulls till we did this). We decided to unhook the FMU, and just use the VAFC to add fuel up top, and the thing sang like you wouldn't believe. We raised the base fuel pressure from 30psi to 37-38psi, and sans the FMU, the numbers jumped from mid 200's to low 300's and the AFR's were actually registering
. After some fine tuning with the VAFC here's the final numbers (corrected and uncorrected). I will say, the sheet doesn't show the highest numbers of the day (based on the couple video clips I shot - see below). Our only problem today was the speed limiter. Couldn't make a single full pull in 3rd gear as the speed limiter would cut in around 5.7-5.9k RPM (damn GXE's - don't let the screen name fool you). I'm betting there's another 5-20hp waiting up top (and my last PSI...), each pull was still building power up until the speed limiter fuel cut started...Power-train details:
'95 Auto 4.5 gen
13k mile '06 3.5L,
Stillen/Matty V2 Supercharger kit 3.25 (10psi) pulley,
600cc Deatschwerks injectors,
Synapse FPR/FMU,
Walbro 255,
Z32 MAF,
VAFC-2
Dyno Sheets:
*Notice, Analog 1 is boost in PSI, smoothing set to "0", very good tune and combination of parts*
Uncorrected:
SAE Corrected:
Dyno Video's:
Highest Torque I videoed, peak boost was 8.43psi...
Highest HP I remember seeing is in this Video (SAE corrected). Not entirely sure why the torque is so much lower on this particular pull. If i had to hazard a guess, I would say belt slip (since there is a "hump" near the speed limiter on the boost line).
You can check out my YouTube channel for a couple more video's:
http://www.youtube.com/user/MadMAXSE
Overall, I'm very pleased. I'm betting if the car were a manual, I would be in the 380ish range. Going to the Rock on Saturday (assuming everybody doesn't bail...) so we shall see what she can do out there this weekend.
...need to figure out the best way to get through first gear
nice
12-09-2010, 09:40 AM
#11
If you just mash the throttle at 60mph, it will downshift. But if you gradually go WOT, it will stay in 3rd. When we dynoed my auto, this is what eddie(95BLKMAX) did and it worked fine.
12-09-2010, 11:28 AM
#12
Question for you, how did you get from 60MPH to 115MPH in 3rd @ WOT w/o it downshifting in an auto? SSV4?
12-09-2010, 03:34 PM
#13
When you do get the ssv4, try to wire up a separate switch for your TC, or program into the ssv4 to not lock your TC during WOT. This way you will have a longer life out of the tranny, since the TC can start to slip (although with your TC shoudlnt be an issue yet untill u start getting into more power), also helps with gearing too (shorter).
12-11-2010, 06:27 AM
#16
12-11-2010, 07:45 AM
#17
12-12-2010, 04:44 AM
#18
12-15-2010, 08:57 PM
#22
Why do you ask? I use a stock IM with a VIAS delete with a NWP block off plate. When I was doing some research, I came across a thread where a guy dyno'd with a 3.5 Alty with the factory IM, VIAS delete, and SSIM and the VIAS out-shined the SSIM up to 6k rpm. Here's the dyno comparison:
I suspect that, if i was to have run all the way up to the redline, my graph would look very similar to the RED line on the graph (tapering off slightly after 6k). We'll see in a couple months when I go back to the dyno.
That's why I decided to go with it. I have an SSIM too (which needs to be sanded badly to finish it up), but after looking through that thread I decided not to even bother. I will say that the VIAS delete may be the root cause of streetz, and possily my own front bank lean situation. I may give the SSIM a shot in the future when I get around to the hour or two of sanding it needs. Also might give the OBX fuel rails a shot too. I highly doubt they will fit under my '06 IM though (since it has an EGR rail), but we'll see. Worst case scenario is I need to find a '02-'04(?) IM and swap them.
I suspect that, if i was to have run all the way up to the redline, my graph would look very similar to the RED line on the graph (tapering off slightly after 6k). We'll see in a couple months when I go back to the dyno.
That's why I decided to go with it. I have an SSIM too (which needs to be sanded badly to finish it up), but after looking through that thread I decided not to even bother. I will say that the VIAS delete may be the root cause of streetz, and possily my own front bank lean situation. I may give the SSIM a shot in the future when I get around to the hour or two of sanding it needs. Also might give the OBX fuel rails a shot too. I highly doubt they will fit under my '06 IM though (since it has an EGR rail), but we'll see. Worst case scenario is I need to find a '02-'04(?) IM and swap them.
12-15-2010, 09:05 PM
#23
just wondering bc im putting together a tc kit for my car 4.5 also, and im had a cam setup which is going to be sold, but i wanted to see if ther power dipped even on a boosted application with the stock cams. i know cardana is going to be sc'd and with cams. just kinda curious if cams on a boosted app would make sence to do the extra work and costs as far as the benefit. im not sure any 3.5s on boost have dynoed w cams
01-22-2011, 06:57 PM
#24
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Remember that SSIM dyno test was done on a minor bolton car that was not flowing anywhere close to as much air as yours is, so you would probably see the gains much earlier in the power band. SSIM with the front cylinders unshrouded could certainly help keep the flow distribution more even, as well.
Another SSIM vs BOP dyno on a NA car with more mods and tune... notice it breaks ahead a little earlier:
Another SSIM vs BOP dyno on a NA car with more mods and tune... notice it breaks ahead a little earlier:
01-22-2011, 07:01 PM
#25
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just wondering bc im putting together a tc kit for my car 4.5 also, and im had a cam setup which is going to be sold, but i wanted to see if ther power dipped even on a boosted application with the stock cams. i know cardana is going to be sc'd and with cams. just kinda curious if cams on a boosted app would make sence to do the extra work and costs as far as the benefit. im not sure any 3.5s on boost have dynoed w cams
Last edited by sparks03max; 01-22-2011 at 09:18 PM.
01-22-2011, 07:04 PM
#26
Remember that SSIM dyno test was done on a minor bolton car that was not flowing anywhere close to as much air as yours is, so you would probably see the gains much earlier in the power band. SSIM with the front cylinders unshrouded could certainly help keep the flow distribution more even, as well.
Another SSIM vs BOP dyno on a NA car with more mods and tune... notice it breaks ahead a little earlier:
Another SSIM vs BOP dyno on a NA car with more mods and tune... notice it breaks ahead a little earlier:
01-22-2011, 07:08 PM
#27
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It only makes sense that the SSIM would become better as you go up in power (can use more flow) and can support higher revs, though. I hated the SSIM when I had it, but at the time I only had headers/intake and no tune. At this point, I've got another IM in my garage getting a nice SSIM job done on it as I have time
Last edited by sparks03max; 01-22-2011 at 07:10 PM.
01-22-2011, 07:13 PM
#28
Was one of fwdnissanjunky's project cars on my350z forums. Not sure on mods, but it appears to have full boltons and full fuel/timing control judging by the numbers.
It only makes sense that the SSIM would become better as you go up in power and can support higher revs, though. I hated the SSIM when I had it, but at the time I only had headers/intake and no tune. At this point, I've got another IM in my garage getting a nice SSIM job done on it as I have time
It only makes sense that the SSIM would become better as you go up in power and can support higher revs, though. I hated the SSIM when I had it, but at the time I only had headers/intake and no tune. At this point, I've got another IM in my garage getting a nice SSIM job done on it as I have time
pm sent
01-22-2011, 08:09 PM
#29
make up your mind dammit
01-22-2011, 08:10 PM
#30
Remember that SSIM dyno test was done on a minor bolton car that was not flowing anywhere close to as much air as yours is, so you would probably see the gains much earlier in the power band. SSIM with the front cylinders unshrouded could certainly help keep the flow distribution more even, as well.
Another SSIM vs BOP dyno on a NA car with more mods and tune... notice it breaks ahead a little earlier:
Another SSIM vs BOP dyno on a NA car with more mods and tune... notice it breaks ahead a little earlier:
01-23-2011, 09:28 AM
#37
MAD-MAX u should run a ssim and port the upper and lower IM to get some more easy power.
Last edited by datdude20; 01-23-2011 at 09:30 AM.
03-20-2011, 11:16 PM
#40
sorry it's been so long on the reply... but yeah, i get some detonation around peak torque, it's hit or miss if it'll do it though. I've since added more fuel from about 500rpm before and increased it through the range and now it only does it when the the car is kinda hot. I need to add some type of aquamist/meth cooling to make it perfect, but i've just been taking it easy on the car and letting off before around 5k if i get the urge to get on it - though it's easier said than done in 1st gear...