i got on the dyno a couple weeks ago so i figured i would share.

my mods are as follows...



Stillen/Vortech V1 Supercharger - 3.125 pulley
Custom SC Cold Air Intake
Custom 3" Charge Pipe
Vortech Mondo BOV
Nismo 370cc Fuel Injectors
JWT SC Program ECU
Walbro GSS342HP Fuel Pump
MEVI
AEM Fuel Pressure Regulator
Warpspeed Aluminized Mandrel Y-Pipe
Infiniti I30 LSD Transmission
Exedy Stage 1 Clutch
Fidanza Lightweight Flywheel

i dyno'd right when i put the SC in about a year ago and hit 286hp/269tq with 7psi (improper belt tension) and stock injectors and stock ECU.

up to 10psi, 370's, and JWT ECU it turned out 319hp/306tq. i have had the 370s and JWT running for 10 months but i just got to the dyno a couple weeks ago.

the AFR looks good, holds around 12.5 without much fluctuation except near redline where it appears to be heading a little lean.

i would love to drop down to a 2.87 pulley, but it looks like that wont be happening since the MAF and injectors appear to be at their limit. one option is to move up to a Z32 MAF and bigger injectors. or i have been pondering getting a cartech and SAFC and going that route...but if i am giong to spend the money i might as well go with the Z MAF and bigger injectors.

it looks like my torque is suprisingly high, but that is a good thing.

i saw my name being thrown around in another thread with some different numbers, so here is the real deal.

have a good day.

 

Nice! you made the 300hp club

 

Great comparison against Bags turbo@10psi:



Turbo has the torque advantage, but the SC keeps pulling on top-end.

NICE~!

 

370 injectors are at limit at 10psi? That shouldn't happen. They are for the 2.87 pulley. But the MAF is at the limit.

 

noice !
10char

 

Nice torque!!

 

Requin - why don't your hp/tq curves cross at 5250? Sorry if it's a noobish question...just never seen them not with the hp/tq measured at the same rate on both sides...look at Bags graph to see what i'm saying.

Good numbers either way

 

Wow the torque is surprising. For exhaust work you just have the WSP Y-pipe? Nothing else? I wonder what is the result of the higher torque numbers. Those are great numbers!

 

Wow...that torque is INCREDIBLE for your setup.....You have about 30tq more than you "should". Wonder if the 3" charge piping helps that much.

I owuld also like to know what's up with the tq/hp not crossing at 5250.....that doesn't make any sense.

But JESUS MAN - that's just awesome!

 

Requin - not trying to flame - just pointing something out.

The reason that all Dynos meet hp/tq curves at 5250 RPM is the formula used to calculate Torque. Torque = (HP x 5250)/RPM

So 5250 is the "zero point" in any Dyno, because of how the formula works.

In your case, looking at the graph, it would be Torque = (HP x 5700)/RPM.
Causing your numbers to be higher than they actually are.

 

hmmm....that is strange, i didnt notice that. i am looking at some other ones and some cross at 5250 and some dont. maybe i have a setting on the curves off...i am going to take a look at this.

 

Got another Dyno we can look at that crosses at 5250?

 

i'll see whats up with this tomorrow after work.

 

All engines will have HP and TQ equal (crossing) at 5252rpm... the fact that yours doesn't is very very strange. Those that don't are using different scales for HP and TQ. Still good numbers and we all know your car is fast as hell so don't worry about it. Probably just a weird setting or something weird happening with the dyno.

 

Great numbers! But Neal is right, it isn't possible for the curves not to cross at 5250 rpm, so one of those curves isn't right. I suspect it's the torque curve, which seems pretty high for a SC'ed Maxima. It shows you making about 280 lb-ft at 6500 rpm, which would mean your power at 6500 rpm would actually be 347 hp. That would be great, but I have to believe your power curve is correct and the torque curve is too high.

 

don't you hate it when you say something and someone else gets the credit...

 

get used to it - I am.

 

Actually Neal and Stephen are correct...it is 5252 not 5250, so who's saying something and someone else is getting credit?

 

True...I was rounding off.

 

eh, whatever, i'm not worried about it...i was just kidding anyway about the credit thing...besides i was asking, not stating, hehe.

 

alright...this is frustrating to say the least.

after looking at my 3 pulls from that day all 3 crossover at different points. so i called the shop i dyno'd at, and they said they have been having some problems with their dyno or their software and that other people have also called. they didnt know if it was the torque or the HP that was setting it off...but they told me i could get back on the dyno and get 3 free pulls for messing these up. problem with that is finding the time...but oh well. the car runs very well, so no big hurry. but yeah if i had to say, the numbers should be around 319hp, 285 tq.

sorry for getting some misinformation out there, but it didnt even occur to me that the graphs didnt cross at 5252. it should have been the first thing i looked for.

 

tell them you'll take them up on their offer after they fix their dyno heh.

btw what did the other runs put down for #s and what rpm did those ones seem to cross at?

 

the one right off the road turned out like 285hp/250tq

run 2 was the one i posted which was after about an hour of cool down.

run 3 was about 5 mintues after run 2 and was like 302/285.

i think one crossed at 5500 and the other near 6k

i am sure all them are skewed in some way, so i'll have to get some more legit numbers in a few weeks.

 

DIN correction factor too, what is SAE?

 

like 5 less on each. haha