2G Loss of power on heavy acceleration!! ### help

[LongJonSilver]

Alright I've searched and seen this problem before but I think mines unique. Im a bit new to the DSM world. So heres my problem, when i floor it my car will pull hard up to 4K/4500 mabe then will "hit a brick wall" and i hear loud popping sounds the rpms won't go any higher. However, if im halfway on the acceleratior i can go 7K+ in every gear. Now my car has no rev limiter and i have a evo8 fuel pump w/rewire kit (+supportin mods of course) now what could be my problem? I checked my pulgs/wires and theyre good and im almost 100% sure no boost leak because it will hold boost to whatever I set it to (15psi now). please help...

btw. full car specs are on my profile

Thanks

 

[mhuffman]

I have this EXACT PROBLEM. I did damage the CAS inner black wire slightly trying to tap in the rpm signal for the MAFT. i wonder...?

 

[63tuner]

check the MAF sensor, or change to a new MAF

 

[mhuffman]

I'm thinking ECU problem. i ordered one from motoguy's garage. we'll see if it fixes the problem

 

[laurence riggs]

did the new eco fix the problem?

 

[TheFlashDSM]

its fuel cut

 

[laurence riggs]

sorry I have just got this 1997 gst.the guy I got it from had misfire problems.
after the car wormed up it would start misfiring. I have changed out the plugs and now just misfires around 4k and. the check engine comes on. when I drop the rpms its fine again. was just trying to figure out it would be the coil pack or fuel.
also the guy put in 950 injectors and he put in a after market ecu. any info would be grate.

 

[1990TSIAWDTALON]

Old thread Laurence. Start a new one with your described problems and you will get more responses.
Also, WELCOME TO THE FORUM!!! Always glad to have more members. Jump over to the newbie section and post up what you just said in your last post. If we keep this thread alive it might not get as much attention.
Marty

 

[BLACK'98DSM]

@laurence riggs
We're glad to have another Alabama member here on the forums