What is the difference in the APR programing on stage1 and stage2+ software?
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I'm currently debating if it's worth the drive to Waterfest to have the car upgraded from my stage1 to stage2+. Since i would have to cancel my orginal engagement.
If the only difference is a rewrite to rid the CEL due to no cats, then it might not be worth the time. I've solved the cel light issue with a extended o2 bung.
My car is a 01.5 s4 with upgraded ic, labree downpipe & test pipe mated to a uuc vm3 exhaust. I was hoping the tuning for the stage2+ programing was a little more aggresive to take advantage of these mods.
If the only difference is a rewrite to rid the CEL due to no cats, then it might not be worth the time. I've solved the cel light issue with a extended o2 bung.
My car is a 01.5 s4 with upgraded ic, labree downpipe & test pipe mated to a uuc vm3 exhaust. I was hoping the tuning for the stage2+ programing was a little more aggresive to take advantage of these mods.
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they didn't really tell me much. Only that it compensates for the full exhaust, but didn't explain how.
So that's what I'm trying to find out, is it more boost, advance timing a more agressive tune over the stage1 etc.....
So that's what I'm trying to find out, is it more boost, advance timing a more agressive tune over the stage1 etc.....
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Originally APR DP's didn't relocated the o2's, even though they had main cats. So if you were using APR stage 1 software with their DP's, you'd get a CEL. So they made the 2+ software which just eliminated the CEL.