Update: Greddy Turbo Kit Dyno
#12
Originally Posted by Spec_Ops2087,Apr 27 2008, 08:20 PM
Once again proof this turbo is far to small to go about 9psi or so.
1. pretty small downpipe (2.25 ish inches?)
2. pretty small intercooler piping...
3. pretty small inlet piping...
just thinking outloud but getting my vf39 tuned (plus a few other bolt ons: intake, 3 inch turbo back exhaust etc) from 11-12 psi to 18 psi brought me from 240whp stock to 310 whp.
#14
Originally Posted by mpower22,Apr 28 2008, 08:57 AM
I'm not sure if I agree 100% with this comment, at least as it it written. I remember in my Subie days that stock boost on a vf39 turbo was 11-12 psi (pretty sure that turbo is a good bit smaller than than a td05-18. I think other parts of the Greddy kit are holding it back:
1. pretty small downpipe (2.25 ish inches?)
2. pretty small intercooler piping...
3. pretty small inlet piping...
just thinking outloud but getting my vf39 tuned (plus a few other bolt ons: intake, 3 inch turbo back exhaust etc) from 11-12 psi to 18 psi brought me from 240whp stock to 310 whp.
1. pretty small downpipe (2.25 ish inches?)
2. pretty small intercooler piping...
3. pretty small inlet piping...
just thinking outloud but getting my vf39 tuned (plus a few other bolt ons: intake, 3 inch turbo back exhaust etc) from 11-12 psi to 18 psi brought me from 240whp stock to 310 whp.
my tuner/shop made a few anecdotal findings from using the kit on a F20 and F22. On the f20c, they believed the CFM limit is reached at around 9 psi. On a F22, they observed 7-8psi CFM limit. This doesn't mean the turbo will not make power after these psi limit; rather, it indicates what the efficiency range is.
If the efficiency range is indeed 7-9 psi depending on whether its a F20/F22, you can see why these large PSIs will not work well with the turbo.
The S2000 engine is a high revving VERY efficient high compression NA motor, and I suspect this is why you are seeing a low CFM limit for the greddy turbo when paired to this motor.
#15
i have custom 3 inch downpipe back exhaust with magnaflow cat.. #9 plug
it is a 5th gear pull.. # on dynapack could be different depend on calculation input.. same day 06 civic si made peak 160hp stock 5th gear pull,
it is a 5th gear pull.. # on dynapack could be different depend on calculation input.. same day 06 civic si made peak 160hp stock 5th gear pull,
#19
Don't have base run with this dyno.. i have dyno with dynojet base stock with 209 peak,
tuned 7psi with this dyno made 250 peak and a little less than 200ft/lb,
how ever i don't see much hp increase but i gain alot of torque, i am waiting to have my clutch change and tune to 16psi..
tuned 7psi with this dyno made 250 peak and a little less than 200ft/lb,
how ever i don't see much hp increase but i gain alot of torque, i am waiting to have my clutch change and tune to 16psi..
#20
Originally Posted by devs2k,Apr 27 2008, 09:56 PM
greddy kit works best at 7-9psi, stock compression for 300whp and about 230-240 peak ft lbs
benefits: quick spool, so great midrange torque, cheap.. think autox, daily driver, NOT 1/4 track, beating the pants off other cars
disadvantage: no real upgrade path, internal wastegated (con for top end power, pro for emissions)
what's it good for? someone who wants a great daily driver turbo with a meaty midrange
what it isn't? if you want more than 300whp
this isn't a cheap way to get massive power..if it were, everyone would have it
benefits: quick spool, so great midrange torque, cheap.. think autox, daily driver, NOT 1/4 track, beating the pants off other cars
disadvantage: no real upgrade path, internal wastegated (con for top end power, pro for emissions)
what's it good for? someone who wants a great daily driver turbo with a meaty midrange
what it isn't? if you want more than 300whp
this isn't a cheap way to get massive power..if it were, everyone would have it