Been waiting many many months for this to get moved from the "Post your Dynos Here" Thread to the moderated forum - so to heck with it - I'm posting it here as it's own post.

Performance Mods:
V2 SC w/V1 Bracket (2.87" Pulley)
MEVI (Set to 5200)
JWT SC/370cc Injector Programmed ECU
370cc Injectors
1 step colder plugs (NGK BKRE6-11 Copper)
Cattman 3" Y-Pipe
Carsound 3" Cat
Custom Mandrel Bent 3" B-Pipe
Magnaflow 3" Muffler
ACT Clutch
HKS BOV
NO CAI

SAE Corrected - Graph smoothed to maximum.
Dynoed on DynoJet Model 248x
Run in 4th Gear.

 

Do you have the A/F for that dyno?

-Also you have similiar mods as the guy that posted the other day. He is running a larger pulley than you (3.12) and is making the same TQ but yet his HP is much lower than yours (I am guessing because of the transmission diff). I am just wondering if you tq numbers are low (though the seem about right) or if the other guys numbers are just high. Or it may be the dyno...dont know.

 

AF will be posted shortly. I'm lean up top due to MAF issues (A32MAF can't handle the amount of air).

Working on a solution for that....Cartech or JWT solution - probably Cartech because I already own one. Just ned to get off my **** and put it in.

What mods does he have?

I have a MEVI - makes a huge difference on HP on a FI car....if he doesn't have one, that explains it.

 

A/F at the bottom of the sheet.

 

Max1man is his screen name...just look a few post below yours. He has the MEVI thats why I am confused...and yes you are running lean up top...one way you could solve that is to pump a nice wet shot in to it

 

I know Max1man....he's part of my forum - NWMaxima.com - I helped him install his MEVI.

285tq on an Auto with a 3.12 pulley isn't normal at all.

There are some differences -
He did the runs in 3rd Gear - I do mine in 4th.

His peak HP run is not the one with the high TQ also. He's mixing his numbers from 2 different runs.
On his peak HP run, he only did 236tq - which is about correct knowing what exhaust setup he has and knowing his car....maybe a little low.

He says in his thread "Now the first two runs were taken at a lower range" - I'm not sure what he means by that.

My leanness up top is a huge part of my TQ issues also I believe - as well as the fact that on that day my MEVI wasn't activating correctly. I had to tie it open.

 

I tlaked to Max1Man and looked at his Dynos some more.

The first Dyno (where he has all the tq) strts at 45mph and starts as a 2nd Gear Run - which is why it shows all that tq.

His 3rd Dyno is in 3rd gear completely and is much more accurate and true.

(286hp,239tq)

Here is my Dyno from back when I had the exact same setup as him, but a Stillen Exhaust vs his Cattman Exhaust.

http://www.cyberhub.net/dyno/Dyno7503.jpg

IanS

 

aren't your #'s really low for the 2.87 pulley....I know requin with his 3.125 pulley with the JWT ECU, 370s, A32 MAF, CAI, MEVI, y-pipe (stock exhaust otherwise), walbro fuel pump put down 330hp/290tq...and that is with only a 2.5" y-pipe and stock exhaust all the way back!!! only running 11psi...!! it's prolly b/c you are leaning out up top...looking at your dyno graph, if you were to lower you top end AFR down to 13:1 or even 12.5 or 12:1, you would get an additional 20 or maybe even 30whp or so...

 

The only "Requin" I can find on this board is Requin6, whoa appears to have a very fast bolt-on car. Did he get a SC recently and I don't see it?

So without seeing any Dynos by this person, I'll say this:

1st - I wouldn't say that my numbers are "really low". I'm 20hp over this "requin." Requin's numbers are also unusual for that setup. VERY unusual. 320hp/290tq is INSANE on Requin's run with his exhaust setup. His car is somewhat of a factory freak in that respect I suspect. I do admit however my hp/tq is lower than I had hoped. Comparing with others who's Dynos I've seen (Jay25, for example) - I'm low but I'm not "really low". And the reasons are obvious. See below on how I'm planning on fixing that.

2nd - The MEVI wasn't activating on that run and I had to zip-tie it open, causing the curve to be slightly askew - that is remedied now and the next Dyno will hopefully show that.

3rd - In the blue run I was running with the computer in normal operation. I then reset the ECU, (red line) causing it to go into test mode and richening it up a bit. It was still lean up top, but not as much - with that alone I gained 10hp peak. Once I get the leanness issue fixed, I'm hoping to be able to hit better numbers. What those will be - who knows? I try not to speculate.

 

Iansw...Requin put down 330whp adn 290tq @wheels...I didn't mean to come off like I did....not saying your car is putting up crappy #'s...I am just saying they are lower than expected...which you addressed completely as to why and how to fix it...what is Jay25's #'s and his setup currently? In my experiences from working at a dyno facility for a little bit...the optimal AFR is about 12:1 or 12.5:1 boosted on our VQ engines...the highest dynos were those running those AFR's...with that said, you peak out at about 14:1...and in my experiences, everyone who dropped there top end AFR's for every 1:1 point, that is to say 14:1 to 13:1, gained a solid 15-20whp...so if you dropped down to 12:1 you could net a solid 30-40whp....so it would be safe to assume you would dyno closer to 370whp or so...once you tackle your top end issues...

 

No offense taken.

Still can't find any posts by Requin with those kind of nubmers...but that's OK - I believe you.

All I meant was that with that kind of Torque out of a stock exhaust setup and a 3.12" Pulley, he's either got one hell of a factory freak or he's running a 30-shot of Nitrous with his SC....or some other thing...like his car is just amazing.

Man that's a crazy amount of tq.

I don't expect to Dyno at 370whp - that would be well out of the parameters for a 2.87" Pulley as I know it. 360 would make me more than happy....350 would be just nifty as well.

 

do you overspin your blower @ 7200rpm's with the 2.87" pulley? what was jay25 putting down with S/C and what setup did he have?

 

Yes, I do overspin - but for a year now it hasn't caused any issues.

Here's JAY25's Dyno:
http://forums.maxima.org/showthread.php?t=210300

Granted, he's on a 3.25" Pulley - but he wasn't having hte issues I was having.

My point is more the tq - which is inline with the difference between him and I <plus my issues>

 

requin also has a 3'' charge pipe, and a cold air intake, if thats enough to make a difference.

 

I don't think the charge pipe makes much of a difference at all, but the CAI prolly makes a rather sizeable difference on a boosted car....