my car is having trouble getting into full boost, feels like power drops!!
i replace fuel filter, i got a better fuel pump and it just does the same thing.
b16 greddy blue box. any ideas thanks!!

 

Does it actually get to full boost?

 

yes, but after that power drops
air-fuel meter shows lean then rich then lean

 

Is the boost dropping? What exactly is your fuel setup?

 

310cc, walbro 255 pump that it. stock internals
6psi. is boosting but just suddently feels like something not letting air going out or, no idea.

 

Doesn't the GReddy kit use an FMU with the bluebox? And you're sure it's not dropping boost when you feel the power loss?

If not, I'm guessing it could be the bluebox. People have all kinds of problems with that piece of garbage.

 

Fuel is everything in turbo cars, Im assuming its fuel related, but i had a similar problem recently. It was spooling slow and power dropped off up top, and it was hesitating sometimes on start. So i 1) found a small exhaust leak= spool & top end2) i had my type S bov too soft(leaking a little boost)= up top, Changed spark plugs, car runs smoother through complete power band and startup

I think your problem is fuel related, but check all the small, free things first and then go from there. The more things you eliminate the faster you will find yoiur problem.

 

check your timing as well

 

is this the 15g turbo? maybe turbo out of breathe

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Foozball26 &raquo;</TD></TR><TR><TD CLASS="quote">check your timing as well</TD></TR></TABLE>

Good idea I also did this i was @ 13 degrees and bumped it up to 14, Noticeable difference in response

 

well this morning i heard something making noise inside my cat cov,especially in idle annoying like something is lose or broken.
turbo is 18g

 

speaking of CAT, which way do the universal cats flow? theres no arrow to show whihc way it flows. does the air tube face the front or back of car.. hrmm well its a catco hiflo.