On a 99 2.0L 140 horsepower engine, how much horsepower would be added after I install my OBX headers and OBX catback exhaust, along with my AEM CAI? And has anyone installed all these mods and how does it run/sound?

 

i am sure that each web site has an hp rating on the items that you are goin to buy. just add them up. and not many of us have obx combos in our cars yet..

 

lol, you can't just add up the HP gains claimed on the websites...it doesn't work that way. Not that I'm an expert but you'd probably see a 10 HP & lb/ft gain across the powerband with spikes in specific RPM ranges of higher.

 

Yeah, Blue2000 is right. SSAutochrome puts that you'll see a 30HP gain with just the Headers on their Ebay auctions.

You won't.

HP doesn't accumulate like you'd think. The 1 HP you get from a grounding system and the 15 you get from a CAI added to the 10 you get from a catback does not equal 26. It'd equal like 20. Maybe.

 

I have the full exhaust from ssautochrome and it's a nice low growl system but the power gains are not even close to 30hp more like 10 may me 12 at the most.My car used to jerk when it down shifted with the stock exhaaust now its nice and smooth .

 

I would guess somewhere around 20. Maybe a little more or less but I think 20 would be a good estimate.

 

header, catback and CAI would probably only give you about 12 hp or so..

 

12 hp? No, that's not possible with all three. A cold air intake gives you 8 by itself..

 

Yeah, around 15 to 20 HP with all of that probably.

Again...

 

20hp is still a nice jump from stock.