ok so here is the back story on what i did today. I found that my intake manifold was missing the center section that contains the valves for the short runners for V-tech. I took the manifold off an put the valve body in place and bolted it back into the car. I hooked everything up and it barely runs:

The car starts fine, idles slightly low ~550 but the real issue is with the throttle, if you give it any gas the car wants to stumble an die yet if you slowly and i mean SLOWLY ease onto the gas it revs clean all the way to red line in neutral.

The car doesn't want to move, in order to get it to move i have to hold the clutch slightly in otherwise the car just bucks an stalls.

I have double checked all connections to be correct and vacuum lines to be correct, the only mods to the car are SRI, DC 4-2-1 header, high flow cat a 2.25 inch cat back.

The car ran perfect until this but had no power from 4-6k rpm due to too much air for its own good thus adding the missing manifold peice.

Any help would be wonderful and if you need more info ask, im about to put my head through the wall with this.

 

Which ecu are you running?

 

stock p72, as an update i found one of the intake bolts had backed out as it was too short, i replaced it and the car runs better but stil isnt driveable, the pressure from the tailpipe feels like i have high compression pistons and cams but i dont i can feel it more then 3 ft from the pipe. i also need to pull a code from the ecu that just came up

 

pull the code and update. Maybe the pressure could be from not having a cat, or maybe a cat going bad.

 

ok pulled the codes, they are 10 and 43

10- intake air temp and 43 is fuel supply system

the cat is brand new, didnt have the issue with high pressure before

 

Change out IAT sensor, it controls fuel going into the engine. When its cold iat tells ecu to add more fuel, and when hot it tells ecu to lessen the fuel.

 

coo on the 94/95 gsr thats the one on the top of the intake near the brake booster vacuum port

 

yes, it has two wires, and when you take the sensor out it should look like a pointy spear.

 

cool, thanks for the help i was lost until that damn cel finally showed up

 

so i tested the IAT and its fine idk why its throwing a code, its getting it ~5 volts and the ohms are just about perfectpending temp. So im completely lost on what the issue is

 

maybe the the wiring to the iat sensor has a short. If not just try another iat sensor to see if that solves the problem.

 

turns out the IAT was bad, it was off slightly but apparently the slight bit was too much