JPJP

Hey 87 T TOP GT302, are you still running Speed Density?

I am Supercharged (Paxton SN89) and still running with 19 lb injectors and SD. I MAY bump up to 24 lb injectors but am happy so I figure leave it alone.

87 T TOP GT302

I still am speed density. I have added an idle adjustment plate .It allows you to fine tune the idling .I purchased it from Mustang unlimited. I have been adjusting and the best I can is idle at 1100 rpms.

ri_stang_owner

thanks for the info guys, how can i tell that my car is running lean?

87 T TOP GT302

Every Mustang is different but with mine it seemed like it needed more fuel .It wasn't bogging but when I nailed it seemed to need more fuel. Lean may not be the best way to describe the condition. All I know is with the 24 it just runs better especially at full throttle.

dawson1112

Obviously your issue is more related to having a lumpy cam. SD cars are prone to idle, fuel ratio and drivability issues with aftermarket cams.

Your cam choice is not to bad , but it still lowers your vacuum quite a bit and the MAP sensor is seeing this low vacuum.

You could gain so much more out of your setup by converting to MAF. I suspect your low end throttle response leaves a little to be desired, but once you hit WOT she screams like a banshee.

The op is not swapping out cams so the stock 19s should suffice .

87 T TOP GT302

Dawson 1112 thanks for your response. I believe I've gone as far as I can without converting to mass air. That being said it idles good for the most part .
You said something about gaining so much by converting to mass air .What would I gain other that fully controlled idle ? I mean performance wise is there any gain ? It seem to me to be a waste so what am I missing ? I've never had a mustang with mass air so I don't know what I'm missing or not.