so i just hooked up a scan tool to my 87 iroc l98 and just curious about a couple of the numbers i got.

128 blm at idle which is good ive heard

when crusing it was around 137 and wot was 139.

are these good numbers?

and also right around 3700-4000rpm each wot shift i would get knock retard just for a second ranging from about 5-11 was the peek retard.

is this normal? i dont feel any power loss and its just for a breift second it dosent keep retarding.

thanks

 

Normal,

you may want to check for worn bushings to make some of the KR go away.

 

ok so gettin knock for a breif second at wot is normal?

and bushings your talking? motor mounts control arms pretty much everything?

also i have hooker super comp headers and 3 inch hooker exhaust.

but i think if i was gettin an actual false knock from headers it wouldnt be so breif?