Ok I have a 92 typhoon with a 20g turbo 80lb injectors 520 fuel pump all the supporting mods with a turbotweak chip. It idles great drives pretty good going down the road but under 3/4 to wot it is acting like it is getting fuel cut or something along those lines it bucks and will not just do a steady smooth pull. The AFR are high 10's to mid 11's any help would be appreciated I do not have a saved data log but i can get one this week sometime.
Issue with drivability under load
- Thread starter BRADRUN
- Start date
yes the chip is set up for my set up its also on E85 I forgot to put in there and I have not put a gauge I can read while driving for the fuel pressure but I figured if I was getting a drop in fuel pressure it would lean out...
QWERTYphoon
Motley Driver Award 2009
I had this similar problem. My catalytic convertor was clogged.
If I had one that would be a good guess. lol
That would cause it except I have a brand new fuel pump fuel sending unit gas tank and this filter
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neildemo
Administrator
upload a video. Is it missing or cutting out completely? Another issue it could be is a bad plug wire. Had a truck would run great but under boost it would hiccup. Changed all the plug wires and was good. could have a burnt wire. Also post a pick of your boost solenoid with hoses. Could have a leak there causing a overboost and computer cutting fuel off so you dont grenade.
I figure it out it was the ignition coil it was cutting out under load. Thanks
