Hi

Re 98 Camaro, Mac headers and K&N induction:

My tuner is on the way. I had to send it back to get it reset to work with my operating system. Rodger and Joe were very helpfull.

Just woundering how the hi-performance tune (stock cam) will affect my A/F.

Currently:
start @ 14.7
12.6 at 3800 rpm
13 @ 4600 rpm
12.9 @ 4700 rpm

Unfortunately my dyno graph does not go much over 4700 rpm. It looks to be gradually slopping richer over 4700 rpm. I was told this AF was fine, but a little on the rich side. 12.6 does seem a little rich for a bolt on car.

Any idea where the stock cam tune might leave it? I was told that 13.2 was about where it should be. I know the stock cam tune will lean it out intentionally. I do not have an AF gauge and cannot seem to fine a good dyno service in my area. Will it make it leaner then 13.2? Any help appreciated.

Thanks JA

 

personally i'd go with cam #2 or cam #3 seeing as you have headers. when i did a dyno run comparing the hi-perf/stock cam to stock on my 00 formula, it made it slightly richer.

 

Thanks

JA

 

are ther eny rightups on this vincii tuner? and will it work with a 99 f-body?

 

http://www.stealthram.com/vhptuner.htm and yes it will work with a 99 car. had it in the wife's 99.