1998 with a 3.5 swap
05-03-2011, 10:39 AM
#1
1998 with a 3.5 swap
This is first run compared to my last. I was on 18" wheels, and these pulls were done in 4th. When I hit ~4k it really starts to take off
All of the pulls were done after driving for 2 hours to get to the dyno then driving straight onto the dyno. Power Mods:
VQ35 from 05 maxima with vq30 timing equipment
JWT S1 knockoff cams
JWT Pop charger
JWT ecu
OBX headers
Cattman 3" cat back
NWP spacers and BOP
VAFCII
05-03-2011, 02:02 PM
#6
JWT ecu=1996 auto n/a program, nothing special
05-03-2011, 02:03 PM
#7
I couldn't imagine even at my power level, having the same power in my 4th gen's body.
That has got to be fun.
Also, re: the lean AFR, 96sleeper and I believe maybe a couple of other members also noted the JWT NA tune to be scary lean.
Also, regarding your fuel limitations, 96sleeper also found he needed an upgraded fuel pump to accommodate the added air. His FP was OEM and wasn't doing the job. He also added +25-27% fuel with no difference in AFR.
That has got to be fun.
Also, re: the lean AFR, 96sleeper and I believe maybe a couple of other members also noted the JWT NA tune to be scary lean.
Also, regarding your fuel limitations, 96sleeper also found he needed an upgraded fuel pump to accommodate the added air. His FP was OEM and wasn't doing the job. He also added +25-27% fuel with no difference in AFR.
05-03-2011, 03:29 PM
#9
I couldn't imagine even at my power level, having the same power in my 4th gen's body.
That has got to be fun.
Also, re: the lean AFR, 96sleeper and I believe maybe a couple of other members also noted the JWT NA tune to be scary lean.
Also, regarding your fuel limitations, 96sleeper also found he needed an upgraded fuel pump to accommodate the added air. His FP was OEM and wasn't doing the job. He also added +25-27% fuel with no difference in AFR.
That has got to be fun.
Also, re: the lean AFR, 96sleeper and I believe maybe a couple of other members also noted the JWT NA tune to be scary lean.
Also, regarding your fuel limitations, 96sleeper also found he needed an upgraded fuel pump to accommodate the added air. His FP was OEM and wasn't doing the job. He also added +25-27% fuel with no difference in AFR.
Since my swap I have not been exactly sure where fuel pressure shoule be. Some say stock fourth gen some say stock 5th gen. I had ironed out 3-5k tune on the dyno at ~38 psi fuel pressure....then I realized that adding fuel on the VAFCII was not doing anything (which taking fuel away worked great)....so I had to re do everything. Turning my fuel pressure up to ~42 psi showed some improvement but I was still going lean up top. So I cranked it up 4 more psi and went from there. I am very rich a partial throttle now, but as you can see I was able to get a decent a/f tune. The line at the bottom is set at 12.8. Also, it is common thinking that leaner is more powerful, my dyno shows that does not always prove it's self to be true on these engines.
as for the fuel pump I am still running a Walbro 255 since my car used to be supercharged, so I should be good there.
Thanks man. I spent a lot of time on this and I am glad to finally get some results!
05-03-2011, 04:12 PM
#10
^sent you files.
Since my swap I have not been exactly sure where fuel pressure shoule be. Some say stock fourth gen some say stock 5th gen. I had ironed out 3-5k tune on the dyno at ~38 psi fuel pressure....then I realized that adding fuel on the VAFCII was not doing anything (which taking fuel away worked great)....so I had to re do everything. Turning my fuel pressure up to ~42 psi showed some improvement but I was still going lean up top. So I cranked it up 4 more psi and went from there. I am very rich a partial throttle now, but as you can see I was able to get a decent a/f tune. The line at the bottom is set at 12.8. Also, it is common thinking that leaner is more powerful, my dyno shows that does not always prove it's self to be true on these engines.
as for the fuel pump I am still running a Walbro 255 since my car used to be supercharged, so I should be good there.
Since my swap I have not been exactly sure where fuel pressure shoule be. Some say stock fourth gen some say stock 5th gen. I had ironed out 3-5k tune on the dyno at ~38 psi fuel pressure....then I realized that adding fuel on the VAFCII was not doing anything (which taking fuel away worked great)....so I had to re do everything. Turning my fuel pressure up to ~42 psi showed some improvement but I was still going lean up top. So I cranked it up 4 more psi and went from there. I am very rich a partial throttle now, but as you can see I was able to get a decent a/f tune. The line at the bottom is set at 12.8. Also, it is common thinking that leaner is more powerful, my dyno shows that does not always prove it's self to be true on these engines.
as for the fuel pump I am still running a Walbro 255 since my car used to be supercharged, so I should be good there.
What injectors are you rocking?
Thanks for the files, and lately, it does seem that way.
I'm headed back to the dyno in about a week and a half and am going to give 12.8 a whirl, richen it up a bit and see if that helps me. I'd be happy to break 250.
I also think a full on, bonafyde SSIM would help your set-up too with that rev limit and those cams. Any thoughts of a larger MAF housing?
05-03-2011, 07:51 PM
#13
Ahh I see ... your fuel pump is not the problem. .. hehe.
What injectors are you rocking?
Thanks for the files, and lately, it does seem that way.
I'm headed back to the dyno in about a week and a half and am going to give 12.8 a whirl, richen it up a bit and see if that helps me. I'd be happy to break 250.
I also think a full on, bonafyde SSIM would help your set-up too with that rev limit and those cams. Any thoughts of a larger MAF housing?
What injectors are you rocking?
Thanks for the files, and lately, it does seem that way.
I'm headed back to the dyno in about a week and a half and am going to give 12.8 a whirl, richen it up a bit and see if that helps me. I'd be happy to break 250.
I also think a full on, bonafyde SSIM would help your set-up too with that rev limit and those cams. Any thoughts of a larger MAF housing?
I am not done n/a. This is just what I have right now. I needed a starting point. I plan on doing a SSIM, is there an actual write up on how to do this properly? I have a larger maf housing that Morph(don't remember his full name) made me a while ago I just have never used it. When I do use it I would want to swap in a z32 element, it currently has an A32 element installed.
05-04-2011, 05:36 AM
#15
Thanks man. The power delivery is different, the 3.5 is very torquey, the supercharger was not as torquey, but it pulled harder up top. At this point it's hard to imagine the supercharger on top of this...it will be fun
05-04-2011, 09:02 AM
#18
As for n/a I want to do a SSIM, and I may alter the intake piping size....other than tuning, that's about it. If you did not read my build thread I plan on maximizing this set up, then I will supercharge it. I already own everything I need to supercharge this set up, but I want to run FMIC when I do, so that along with the piping are the only things I still need to pick up.
05-04-2011, 09:11 AM
#19
I always take pics lol. I'll send some over. We did it right after we ran our PB with our 3.5 then the radiator support broke and we never got to try it.
05-04-2011, 11:00 PM
#21
http://forums.maxima.org/dyno-discus...f-set-ups.html
will give you an idea about the gains, helped 6-10 average whp during drop of, really didnt do much for peak , but it helps , you with cams should get better results
will give you an idea about the gains, helped 6-10 average whp during drop of, really didnt do much for peak , but it helps , you with cams should get better results
05-05-2011, 06:47 AM
#22
http://forums.maxima.org/dyno-discus...f-set-ups.html
will give you an idea about the gains, helped 6-10 average whp during drop of, really didnt do much for peak , but it helps , you with cams should get better results
will give you an idea about the gains, helped 6-10 average whp during drop of, really didnt do much for peak , but it helps , you with cams should get better results
05-05-2011, 08:23 AM
#23
This set-up seems quite similar:
96sleeper
Mod List:
http://forums.maxima.org/dyno-discus...all-motor.html
With our new modernized mods (
) I think you can definitely be at 280 peak.
96sleeper
Mod List:
Engine mods on the 3.5:
JWT hybrid intake
ported MAF sensor
70mm TB
A33 IM modded
JDM cams (same specs as JWT)
test pipe
2.5 inch electric exhaust cutout in test pipe
2.5 b-pipe
hooker muffler
JWT VQ30 ecu with 7000rpm redline
UR underdrive pulley
Spec stage 2 clutch/stock 4th gen flywheel
cattman headers
adjustable fpr
SAFC II/zeitronix WB02 tune
JWT hybrid intake
ported MAF sensor
70mm TB
A33 IM modded
JDM cams (same specs as JWT)
test pipe
2.5 inch electric exhaust cutout in test pipe
2.5 b-pipe
hooker muffler
JWT VQ30 ecu with 7000rpm redline
UR underdrive pulley
Spec stage 2 clutch/stock 4th gen flywheel
cattman headers
adjustable fpr
SAFC II/zeitronix WB02 tune
http://forums.maxima.org/dyno-discus...all-motor.html
With our new modernized mods (
) I think you can definitely be at 280 peak.
05-05-2011, 08:39 AM
#24
I had never looked at his n/a dyno...thanks for that. When I am boosted I will have a very simlar set up to what he had. I have the injectors that were in his car along with the JWT ecu he was running.
05-13-2011, 03:53 AM
#26
06-15-2011, 06:18 AM
#32
Thanks
Thanks, I hope to make a higher peak number once I install a SSIM.
05-10-2012, 07:07 AM
#36
05-11-2012, 09:10 AM
#37
O man...that's good .can't wait to see the numbers..especially when u pit the v2 back on
10-10-2012, 08:01 AM
#38
the secret is not in the sauce
The red line is with the SSIM, blue is previous best. The only things that have changed since the last dyno are the SSIM, and now I am on 16" wheels and tires. WTF????
The red line is with the SSIM, blue is previous best. The only things that have changed since the last dyno are the SSIM, and now I am on 16" wheels and tires. WTF????
10-10-2012, 08:14 AM
#39
u lost horsepower but still gained almost 3mph in the 1/4 mile and picked up 4 tenths....
if u magically lost 13 whp you shouldve ran slower than u did with the 18s
10-10-2012, 08:26 AM
#40
That's the only thing that has me wondering WTF? I almost wish I was running the same tires at the track both time so I would know if I truly was loosing power. But at this point I don't know if the increase in MPH was going to a smaller wheel tire combo....or if I really did gain power but it did not show up on the dyno. I know the butt dyno feels like the car is slower with the SSIM... With the stock manifold on when I would hit 4k the car would push you back in the seat....that feeling is not as drastic with the SSIM....not sure if I really lost power or if the power delivery is smoother.