95srv

I have the greddy kit on my lude and at partial throttle ( 80%,5psi) if feels OK, but as soon as I floor it the power dies a quick death. If I keep the peddle floored I get a sparatic power increases. I can hear the wastgate opening fully. It jars from having power to no power, especially in vtec. I suspect that the crappy internal wastgate is the cause and I will be converting to external but I am wondering if something else is the adding to the problem. I am using zex plugs, running 7psi right now. I am thinking about trying out those grouding kits as well. I have a full MSD ignition setup.

Any input is welcome.

95srv

Boost is fairly steady at full throttle. It fluctuates very slightly but still hold around 7-8psi. How can it be the MSD box? It worked fine in vtec before a put the turbo on.

95srv

Bump for solutions.

PrecisionH23a

Have you had the set-up tuned yet? Do you know what the air/fuel ratio is under boost? Did you gap your plugs to .028-.030"?

95srv

No it's not dyno tuned yet. Street-tune, yes. I'm running Hondata s200B with a PLX M300 wideband. RC 550 injectors. A/F is 11.5-12 so that's not it either. It's got to be the crappy internal wastegate and/or the plugs. THe plugs are some Zex plugs that i ran my nitrous set-up with. You can hear the exhaust get much louder but the power just falls right on it's face. BUt my boost guage still reads boost.

sharkcohen

I seriously doubt your plugs are the problem. Get it tuned, a/f is only HALF of the job.

Are you sure boost isn't falling off above 5k rpm? I've seen this happen with the Greddy kit. A friend of mine overcame this issue by sourcing the vac line for the wastegate shortly after the turbo, rather than post throttle body. It took a bit longer to spool, but it held pressure all the way up to 8k.

95srv

Nope it holds boost. Even starts to creep up.

TheShodan

iTrader: (14)

Hate to sound silly.. but you may also want to check for exhaust leaks throughout the system. This sympton deals with areas that may have been overlooked.

95srv

Ok so now it's really messed. Full throttle, powerloss, feels and sounds like a jack hammer is in the engine. Any idea's?

95srv

TPS(throttle position sensor) What is MAP? I mean the car runs just fine in N/A. Or did anyways.

FAUCON

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PrecisionH23a &raquo;</TD></TR><TR><TD CLASS="quote"> Did you gap your plugs to .028-.030"?</TD></TR></TABLE>

I think the answer is there , Dont assume they are ok...check the gap.