I recently bought an 88 firebird formula with a 305 and the previous owner installed a hypertech performance chip to replace the stock one but I believ it is messing with the MAF. 75% of the time the
The chips do change some sensor presets, do you have a check engine light on?
Only when the problem occurs does the check engine light come on. When I start up, if the light stays on, I know it's going to be an issue for that trip. Few times I've shut her down and restarted with that resolving the issue
Then there should be a stored code in the system, get the codes checked, it might be something other than the chip messing up, most of the performance chips I have ran a crossed will not interfere with engine control system diagnostics.
I will give it a shot, thank you.
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