So why are people saying to ditch the DP? Suggesting to run a stage 3 map on the stock pipe? Seems counter-intuitive... need more info.
Ok there's some misinformation here. An aftermarket DP allows the tuner to run a more aggressive tune which in turn makes more power. Similar to an intercooler, the part itself doesn't 'make' power it simply allows the ECU to safely run the different tune.
The whole 'stages' thing is mostly marketing, but any quality tuner will optimize the tune for your modifications. It would be unsafe to run a custom tune for 'full bolt-ons' on a completely stock car. That being said, the Cobb OTS tunes are VERY conservative, which is why gain differences are minimal between stages and many people get away with running a higher 'stage' tune than their actual hardware.
Stratified tuning said to expect 10-15 more HP over my 'stage 1' E30 tune when I install my intercooler and DP AND upgrade the tune. 10ish HP with a new tune optimized for just the intercooler.
The power gains from running a tune optimized for a DP are there, up to you to decide if the gains are worth it. To say there are NO gains is just wrong unless your tune isn't optimized for the DP.
And please ditch the Cobb OTS tunes. Any reputable vendor's tunes will be so much better in every way. We're talking +15hp +30ft. Lbs. Torque over the Cobb ots tunes.
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