I just recently purchased a new screened maf to replace my descreened one now. the car detonates like crazy loses all power up top i always run 91 octane its all we got in az no 93. The maf is from a 99 vette dont know if that makes a difference

 

Have you tried putting the old one back on or unplugging it completely?

 

Im going to try the old one when i get home. But wont unplugging it make it throw a code and run like crap?

 

Yes, it will throw a code, but no it will actually make your car run like a god.

 

Unless something else is really wrong unplugging it will send the car into VE only mode which is a table programmed by GM to estimate air/fuel to make the car run.

It will set a code for MAF failure but should run decent. If it runs like crap with either the other MAF or MAF unplugged, you need to get someone with a good scanner to help diagnose the cause.

This is all assuming you didn't just get some crap gas...it happens and no brand is safe.

 

I'll throw the old Maf in and start it unplugged . Really appreciatehe help guys.

 

Arent the vette maf 85mm i thought you had to get tuned witg diffrent tables if you go bigger

 

That is on newer vettes its from a 99 same size as my stock one .

 

Well ran normal with it unplugged . Still had a light detonation though.