Originally Posted by hozII
HAHAHAHA!!! IDK how in the world you can tell a HP gain from a bumper on a dyno and no it dont dyno anyways. I used to be that person that thought by adding all this aftermarket stuff made a huge diffrerence and though some of it does a lil at times but come on dude you gotta be kidding me, theres no way THAT bumper is gonna make THAT much difference on that car, been there seen it done it. I cant tell you how many dollors ive wasted over the yrs on that stuff and though i did like it but it wasnt helpin all that much in the HP department, now if ya wanaa start talkin about engine add on's and CPU upgrades then ok i can agree with that, but until then show me where on a DYNO you can see a difference from a front bumper.
Let me put it much more simply...
1- Stock lip forces less air into the FMIC
2- Aftermarket lip forces more air into FMIC
3- More air into FMIC lowers intake charge temperature and turns up charge density.
4- Higher charge density & lower charge temperature means more knock control.
5- More knock control means you can tune closer to stoich and make more power
6- More knock control means you can advance timing closer to MBT
7- Advanced timing and closer to stoich means car gets more power. (best usually about 12:1)
Sorry if I lost you anywhere in there. Not all cars have aggressive front lips just for looks.
In general, its frustrating when the majority of people think "oh I just bolted on this new part and now I have XX more HP because thats what the website says" - most bolt-ons are power enablers: meaning you have to actually recalibrate something to enable your engine to produce more power.