elderc

Went to the dyno the other day was shooting for 225whp but only made 219whp, It looks like I was still making power up top do you think if the dyno guy went to say 6,700 instead of stopping at 6.300 I could have squeezed out a few more hp's ?

Garrett T-25 .48/.49
410cc injectors
A/F 11.5 @ 75% injector Duty cycle
Emanage Blue
219 whp @10.25 psi

Braineack

iTrader: (62)

yes, you would have hit your goal. never rely on the stock tach; it's always at least 500rpm too fast at high rpms.


pretty nice torque curve.

Turbo_4

iTrader: (6)

Damn, you are at 75% duty with 415's on a t25? Any other fuel mods?

Braineack

iTrader: (62)

i was at 80% with 460s at 232rwhp.

elderc

Thanks, thats what I was thinking next time I'll have the dyno guy push a little more RPM's, remember the stock fuel pressure on the NB's is 57-61 psi ( the injectors are 360cc from a 323 gtx but the flow rate is 410 @ 57psi stock fuel pump)

Mach929

iTrader: (3)

what's the specifics on the rest of your setup.

Braineack

iTrader: (62)

just rev until you hit the limiter...that's why it's there.

elderc

I'am all about hitting the rev limt, but for some reason the dyno guys don't want to do it?
Other mods : Koyo 37mm Rad, 2-1/2 racing beat midpipe, Borla exhaust, turbosmart MBC, saab turbo downpipe, NGK wideband, EMB, Bilstein HD's, Spec 1 clutch 18x12x3 intercooler,otherwise stock.

m2cupcar

iTrader: (5)

That's a nice looking pull - good curves. It really is a shame he didn't stay in it. It's pretty much mandatory to tell the dyno operator to stay in it until X rpm and do not look at the car's tach, watch the computer screen with the ign pick up.

elderc

I told him to take to at least at least 6,700 I guess he was looking at my tach instead of his computer screen.

Stein

iTrader: (46)

Man, I'm scared now. Same setup and I'm at 8 psi with stock injectors.

I need me some mo bigga ones.

paul

iTrader: (21)

nice numbers for 10psi

Savington

iTrader: (31)

Very nice numbers. The 99 heads flow hard up top. It's a shame you didn't rev it to the limiter, though.

elderc

The 99 head flows better than I thought I was suprised I was still making power up top with a small T-25, I made one pass at 11.50psi and lost 18hp so for that turbo anything beyond 10-10.5psi must be in the chock zone ?

Braineack

iTrader: (62)

yeah, but what rpm did he decide to lift at?

elderc

6,084 RPM is what my data log shows. maybe he lifted to soon ? I might have picked up a few more hps. if he stayed in it longer.
He told me the pass at 11.50 was 10mph faster than 10.25psi, so does that mean at 11.50psi @ 6,084 produces more mph than 10.25@ 6,300 ?

paul

iTrader: (21)

haha, it can't mean that. gears are gears. it could only mean you got to a certain point in less time.

elderc

That what I'am talking about....................but I'am no "dyno guy" lol

paul

iTrader: (21)

maybe he meant the 10psi pass topped out 10mph faster than the 11psi pass. but does 216rpm in 4th gear translate to 10mph?


edit: Just checked and that only makes a 3.4 mph difference if you have a 5 speed with 205/50/15s

elderc

All passes were in 3rd gear (5spd) and tires are 205/45/16 if that helps, so bottom line I guess I'll have to go back to the dyno for a do-over lol.