My d15b dyno sheet @9psi(need more rpm)
 

And some questions for the pros
1.Will a ramhorn manifold help my spool time or increase my horsepower at the same psi
2.Is it better to do a port and polish head or just turn up the boost
I would like 2 know which modification would yield more power without turning up the boost
And I noticed i got a boost spike to 12psi and it felt like a speeding bullet compared to the 9 psi
I wonder if the boost is too low for such a large turbo?

THE CAR-96 COUPE
Attachment 33815
Attachment 33816

THE ENGINE-D15 VTEC
https://i32.photobucket.com/albums/d...o/S4020289.jpg

THE TURBO the one on the right of course
https://i32.photobucket.com/albums/d...icture-008.jpg

THE DYNO SHEET
https://i32.photobucket.com/albums/d...o/S4020721.jpg

Re: My d15b dyno sheet @9psi(need more rpm)
 

that turbo is way too big for your motor. you need a medium sized t3 at the most a super 60. definately not that holset. its most likely surging and under the efficiency range, either turn up the boost or get a smaller turbo.

Re: My d15b dyno sheet @9psi(need more rpm)
 

I'd say for 9lbs, you're right where you should be. That's pretty good power for a 1.5L ;) But that's still way to big...get a 48/60 and run it at 9lbs. I bet you get better results

Re: My d15b dyno sheet @9psi(need more rpm)
 

WHat these guys said... oh and beautiful car btw i even like the pin stripe ;D

Re: My d15b dyno sheet @9psi(need more rpm)
 

that turbo isnt too big
keep the turbo and up the boost

Re: My d15b dyno sheet @9psi(need more rpm)
 

Those pics are too big for this post.

Re: My d15b dyno sheet @9psi(need more rpm)
 

You dont need a smaller turbo, you just need a bigger motor :6

Is your waste gate dumping right in the engine bay?
What's with that larger flexile hose under the charge pipe?

Well done, nice stuff.

Re: My d15b dyno sheet @9psi(need more rpm)
 

just wondering....whats your set up?

Re: My d15b dyno sheet @9psi(need more rpm)
 

first off nice car. and clean set-up. to answer your questions...

1. Yes a nice manifold like a ramhorn will help the turbo spool up faster due to smooth equal length runners and collector. and it will also make more power on an identical set-up and boost level than a different manifold.

2. if your motors built to take more boost throw it at it... however when ever you do things like a Port and Polish.. Cams.. Cam gears.. etc. etc. you make the motor more efficient. Which means you make more power at the exact same Boost level. Hope this helps out a little.

Re: My d15b dyno sheet @9psi(need more rpm)
 

i had one of these motors once and chiped the ecu and reved it to 8k everyday for a year till i sold it. you just need to chip the ecu and rev it to 7500 just to give you a little more time to stay in gear. i say great turbo and great motor good luck

Re: My d15b dyno sheet @9psi(need more rpm)
 

My setup:

jdm d15b vtec-totally stock
toyata injectors 315cc
holset hx40-turbo/.48hotside(modified)
greddy emange-for tuning
stillen fpr
homade turbo manifold
evo3 intercooler
act 4puck steel clutch/w stock pressure plate

Re: My d15b dyno sheet @9psi(need more rpm)
 

Your boost spike is more than likly releated to that shitty delta creepergate. Which would easly show why your dyno graph is making so much more power on the top end. Most D's dont carry torque in stock form that long... its creeeeeeping.

Re: My d15b dyno sheet @9psi(need more rpm)
 

and JDM bov. sheepdog right?

Re: My d15b dyno sheet @9psi(need more rpm)
 

word

Re: My d15b dyno sheet @9psi(need more rpm)
 

turbos to big, as was explained in the thread you made when you did this.

Re: My d15b dyno sheet @9psi(need more rpm)
 

wait....stock pressure plate? yeah that will be slipping out on you here soon if it isn't already.

Re: My d15b dyno sheet @9psi(need more rpm)
 

boost surge is the meltagate creepin and that turbo is way big for your little motor

:y