I wish the OP would chime in on this.
I just came across this thread and want to do it, but a little nervous about the extra boost thats going to be produced in the higher rpms. Do you guys think it will be enough to make the car run lean up top? I dont really want to get on the dyno to check since my tuner is over an hour away. Ive got a hand held predator tuner so I could always add a little fuel if needed.
It will definitely lean out up top. I was wot going down the 1/4 mile watching the a/f gauge reading 16.7!!!!! I am really surprised there hasn't been anyone elsewhere notice something was up or had a major problem that has said how great this mod is. I bought a new vacuum harness and ran again now I'm back to 11.6 average a/f all the way down the track
It will definitely lean out up top. I was wot going down the 1/4 mile watching the a/f gauge reading 16.7!!!!! I am really surprised there hasn't been anyone elsewhere notice something was up or had a major problem that has said how great this mod is. I bought a new vacuum harness and ran again now I'm back to 11.6 average a/f all the way down the track
would a tune cure the lean condition and make this a really good mod?
I did not go back to stock as in complete factory I just bought the original vacuum harness as if I never performed this mod. Brian97 maybe right but I would make sure that you know exactly what the outcome effects are with a A/F gauge and some track or dyno time
I have this mod with no problems at all and a perfect A/F ratio, but then again I plugged that lower nipple on the dump valve, since the stock configuration basically it runs into a sealed canister nipple thingy and no where else, so it was meant to be sealed.
What do you do with the vacuum line on the back of the boost dump valve?
Don't do this mod its not worth it! You will create a lean condition which is never good. When your ready to race just swap the two lines then swap back afterwards.
I have this mod with no problems at all and a perfect A/F ratio, but then again I plugged that lower nipple on the dump valve, since the stock configuration basically it runs into a sealed canister nipple thingy and no where else, so it was meant to be sealed.