Hi all! I bought a FiST yesterday. It's a salvage/rebuilt. On the drive home I went to pass on the highway WOT in 4th and it stumbled bad. I tried again in 2nd after taking an exit and again it fell on its face. It seems any throttle input greater than 50% causes this. Otherwise it drives fine.
Mods disclosed were Cobb RMM and whoosh sound symposer delete. Also the seller installed a stock muffler as it came with aftermarket. When the weather gets better I will be looking it over more thoroughly.
Things I'm considering :
Bad gas from sketch station
Plugs/coils
Original owner tuned and did not return to stock(seller did not tune and is not aware of any tune)
Bad catalytic converter?
Exhaust leak? Would effect be this bad??
Bad air or fuel sensor
Some other unknown mod yet to be found
No CEL and I've checked for stored and pending codes using a Bluetooth reader + torque
If the car is tuned how does that work? I'm going to get an accessport (wtb thread coming soon) but will it be able to overwrite the tune that is possibly on the ecu already?
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Mods disclosed were Cobb RMM and whoosh sound symposer delete. Also the seller installed a stock muffler as it came with aftermarket. When the weather gets better I will be looking it over more thoroughly.
Things I'm considering :
Bad gas from sketch station
Plugs/coils
Original owner tuned and did not return to stock(seller did not tune and is not aware of any tune)
Bad catalytic converter?
Exhaust leak? Would effect be this bad??
Bad air or fuel sensor
Some other unknown mod yet to be found
No CEL and I've checked for stored and pending codes using a Bluetooth reader + torque
If the car is tuned how does that work? I'm going to get an accessport (wtb thread coming soon) but will it be able to overwrite the tune that is possibly on the ecu already?
Sent from my Nexus 6 using Tapatalk