Well i just installed my max rev kit, etc yesterday and it is on a 97 GSR motor in a 00 Coupe...I had been running a p72 with hondata s100 for my toda set up so i took that out of course afraid of the crazy timing advance...I slapped on a 00 Si ECU...and the car idles pretty close to stock and drives fine...but then when i take it too like 5500 onward...the car studders...seems like its starving for air..almost makes the car shake....any idea what this could be?

 

bump,.

 

yea my car is doing that also vtec makes it worse...Its a shitty fuel mixture or fucked up timing...my cars untuned

 

What type of fuel managment are you running?

 

im running a walbro and an vortech fmu.

 

COULD BE...too much fuel to little fuel wrong plugs wrong timming goddamniit my car will never run right..arrrrrrrrr

 

What plugs should i be running in a turbo car? COULD it be that the runners arent opening up?

 

you can hear it scream when they open up man..gotta admit the gsr mani sucks for boost screw that 2 stage crap....some kind of ngk 7 sieries plugs with a.028-.030 gap which i cant get at one damn autoparts store around so i ordered those zex ones. i love ebay....

 

have you checked your timing yet? WITH A GUN? check that first. do you have an afc hooked up? that can be advancing the timing... you are tuning the distributor toward the radiator right?

 

afc doesnt touch ignition timing..but check out your timing..bump to help you out

 

what makes a turbo car break up top end ? bump for some help...

 

too much/too little fuel and/or timing, Plug gap are all usual suspects

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GSRT37 &raquo;</TD></TR><TR><TD CLASS="quote">afc doesnt touch ignition timing..but check out your timing..bump to help you out </TD></TR></TABLE>

afc affects the map voltage and advances timing as your rpm's go up. you could be detonating also. Is your distributor turned back?

 

hmmm that brings me to another question. I have my vafc on a 3 bar map sensor..hmmmm thats not good is it?

 

ur right, thats not good. Honda ecu don't like 3 bar map sensor unless you have it chipped with uberdata...turboedit...blah blah...

 

I HAVE A HONDATA STAGE 2B also on top of the vafc . car wont run with a 3 bar on stock ecu...

 

i fixed some boost leaks and threw a hks SSQ bov on there because i could tell the maxrev was leaking and it now does it around 5k rpms or so...some say plugs some say too rich?

 

that studdering problem sounds like a problem we had with a freinds car. It has somthing to do with the vtec crossover point. He had a vafc so i raised and lowered the vtec engagment point and the studdering followed the vtec points ex.5500rpm. try unplugging the vtec solenoid if the studdering stops thats your problem if not it could be any of the problems stated above.

 

i think i had the same problem that you're talking about... i'm running a gsr motor as well... when my plugs are gapped to about .030, my car idles fine, but when i'm at full throttle and up in the rev range, my engine seems to stumble like its gasping for air or something... what i did was, i pulled the plugs and gapped them to about .020 and the problem went away and my car pulled like a ****.. but my idle was horrible.... and my hondata is tuned too... so go figure..... this never happened on my LS turbo setup though..

 

weird...sucks..so shuld i go colder or no.

 

hmm..

 

i think i might get some NGK bkr7e's

 

A fmu and an in tank are not enough to supply all the fuel your car needs....I would get that car to a professional soon before it goes BOOM!!!...If your resources are limited, get yourself a in-line pump for the mean time....That walbro can not supply fuel to your engine fast enough....

 

ive got an inline sitting in my room..i always thought that the Walbro in tank was better...???

 

hmm...