Yeah its a women getting ready to go out. They pick a shirt, dont like it with the pants, and change the pants. Then the shoes dont match, so they change them, then the shoes have sparklies that dont match the shirt, so they change the shirt, which now is sleeveless and needs a different bra, but the only one without straps is red, and its a white shirt, so the shirt changes again…
A lot like, exhaust , intake, tune, FMIC upgrade, tune, injectors and more boost, tune, cheaped out and got too small an exhaust so they change it again… Its one thing to not have the money up front, but it another thing to mindlessly change shit and not look ahead to make feasible decisions along the path to success.
And about changing the DP making or not making power, Errrrine did you dyno it prior and then after installation? Make a pass on the track, change it in the pits and make another pass? You have no way of telling… other then google searching.
You want real answers to what has changed power wise with that DP change? If the tubing got bigger in dia, and cats are still installed, you lost off boost tq, very, very slightly gained quicker spool, which will move the tq curve a little lower in the revs, full boost hp may have increased a little bit because of the lower pressure post turbo (more volume = less pressure).
all in all even if you gained 10chp from it, thats all of 5awhp, and it takes about 10hp to move a 3500lb car .1 seconds faster in 1320feet. So you improved your 1/4 mile pass by .05 seconds. If you think you can “feel” the difference going to walmart down rt 30, you are fucking out of your mind, or a walking incredibly accurate human dynojet.
I <3 physics and science.