from my experience of putting on headers, y pipe, exhaust and spacer....i wouldn't waste ur money. you'll only gain about 20-25whp and spend over 2k. just save up for FI.

 

not everybody wants to have the hassles associated w/ having a built engine or going f/i

 

So you recommend stock exhaust with FI? LOL

Even the headers will only help with FI. Thats if you can use headers with the FI of your choice.

 

true. And the Strup headers will work with a SC kit, but obviously will not work with a turbo or TT kit. so the FI of your choice would be limited to a SC if you decided to get headers. What happens behind the headers is not dependent on the choice FI. Of course, I wouldn't recommend leaving it stock!

 

if i read you correctly, are you saying that you recommend leaving the stock Y-pipe in place for the purpose of deliberately creating a restriction in the flow to give more backpressure?

everything in modding on this car is a tradeoff... you WILL lose low end power in trade for top end if you make intake and exhaust changes. losing some didn't bother me at all. whatever i lost in the low end i made up with MORE in the top end.

my friend has a massive 5.4L V8, that jumps off the line like a rocket, and then we hit 2nd/3rd gear and i boogey past him. look at the Honda S2000.... zero low end grunt but still a blast to drive

 

I'm just saying that, based on what i've read, that if you retain the stock exhaust but aftermarket cats and headers, adding an aftermarket y creates a HUGE loss of down-low power, with minimal, at best, gains at the top end (like maybe +2hp)........so if you think it's worth it to trade like 15tq for 2hp, well, then do it, heh.

 

End of discussion!!!! Hard evidence?

 

That's right, everybody complaining about a noticeable loss of power when adding in an aftermarket y with their headers and cats (while leaving stock catback/y-back/whatever you want to call it) is just a coinsidence

 

I agree with 99atlantic. I have heard of lots of people complaining about massive loss of low end power with minimal top end gains when adding a y-pipe with headers+HF cats+stock cat back. I currently have headers and HF cats in my garage waiting to be installed with the OEM rear section. I will not be modding the y-pipe.

 

LIES!!!!! PROOF!!!!!

 

you do remember that you would need aftermarket parts to make the most out of your SC or turbo, right? but anyways, some people aren't modding purely for speed and power,, i for example, dont want to go FI for the hassles, im just mainly going for sound... but thats just me

 

I'd really like to read more about this, considering I have the headers, cats AND Y-pipe waiting for install. I'm sticking with the OEM rear-section and was going to have a reducer cone from the Y-pipe to rear-section.

With getting the MREV installed, I'd really hate to negate it's TQ increase by installing the Y-pipe, if it truly results in a loss with this specific combo. Anyone else want to chime in?

 

So does this dramatic loss of TQ occur if you replace the OEM catback portion of the exhaust as well or is it only if you leave it stock. I am planning doing Strup Headers, UTR Race Pipes, Stillen Exhaust. I am willing to sacriffice some low end TQ for more high end HP but not an uneven trade off.

 

One comment I'd like to make is the exhaust note sound improvement from the combination of headers, high flow cats and dual exhaust. Every morning when I start my car, I still get a little grin as the vrrrrroom! rattles the house.