Does the overpipe really make a difference?

[jflogerzi]

Originally Posted by Wise

I've already got a Takeda Intake installed on the car.

So do you think Perrin Cat Back + Borla UEL headers would be a better option than just Perrin Header Back?

I want to keep at least one of the cats in the car and not be too loud. I was thinking of getting the resonated catback.

Get the revworks. Better quality. I would get the tune first before you get the header. Tune is what will unlock the most from any header. Keep the stock front pipe with the cat.

[Obja]

NO.

[IAmNotTheDriftKing]

I have heard some fitment issues with overpipes. I would just leave them alone just because of that. 2whp is not worth having an annoying rubbing sound every time you drive. Just save the 200 - 300 bucks for some good headers.

[akyp]

Agree with above. Seems more (potential) headache than it's worth. The stock OP also has heat shielding which the aftermarket ones don't have, though you can order some of them with ceramic coating.

[Fast_Freddy]

"Does the overpipe really make a difference?"

Of course it does. Possibly as much as +3 whp with a tune. The real question is if +3 whp is worth $300. To some it is, to others it is not.

[Anthony]

Originally Posted by Fast_Freddy

The real question is if +3 whp is worth $300. To some it is, to others it is not.

The Private Label MFG over pipe is 35% lighter than stock. SOLD! If I get any power out of it, that's just a fun little side effect. Different strokes...

[EvilBeaverFace]

Originally Posted by Wise

Is the cel a prevalent issue with changing the headers or is it only isolated cases?

Yes, but you can always get a spacer/defouler or whatever you call them until you can get a tune.

I personally got the Op/FP combo from nameless and my headers will arrive within a week or so. That's all I'm doing for my exhaust, doing that alone will change the sound enough for me. I'm kind of waiting on people to figure out some of the up and coming tuning solutions before I decide on one, until then I'll be using a spacer.

Some people will swear against spacers as well but it seems like enough people on here have had enough success with them anyway.

[FR-S Matt]

Yes, it makes a difference. I just attached a 3" downpipe/overpipe to the stock header and feel the difference in flow. The stock header is a piece of crap though. I'll be replacing it once my JDL arrives.

[fmsida]

Originally Posted by EvilBeaverFace

Start on the engine side of your exhaust and work backwards. Muffler is mostly for sound change but doing headers and/or OP/FP will change your sound anyway.

Plus a tune to maximize benefits and fix torque dip/cel if you can.

I just installed a Borla UEL headers on all stock exhaust. Sounds good and still no CEL. I do have a tune though, but I haven't gotten my tune updated to take my headers into account. @FA20Club.com provided my tune for my Automatic BRZ, it has been running great. I will be sending logs to them to have them update my tune for Borla headers.

My next mod is coming in the mail, (works axle back muffler). After that, i will keep an eye out for a a good qulaity used/new overpipe that is selling less than $200 shipped.

My advise to the O.P. would be as follows ; tune->headers->overpipe->axleback or cat back.

The tune, license & cable would be as much as a perrin catback BUT the catback won't yield you as much "ass kicking" as the tune will. Follow that with headers, and now you have a nice increase in power and sound. An overpipe will increase the sound and exhaust flow as well, but this is stricktly preference as stated by many before me.

If you want loud muffler noise, then go with an axleback/catback. The headers will definitely increase sound volume.

[zc06_kisstherain]

including myself many people think "worth to get OP?"
for me, i cant think myself to spend $300+ to get OP. I just spent money on Motiv Catless FP and recently got nameless axle back. (waiting for shipment)
if i get header, yes i would get OP as well

[EvilBeaverFace]

I've said this in other threads, technically the nameless OP is only $100, since the FP is $400 and the combo is $500. If you think about it that way it's not so bad is it?

[AVOturboworld]

The crossover pipe makes a big difference in turbo FI applications, however.

[zc06_kisstherain]

Originally Posted by EvilBeaverFace

I've said this in other threads, technically the nameless OP is only $100, since the FP is $400 and the combo is $500. If you think about it that way it's not so bad is it?

FP is only $100, since the OP is $400 and combo is $500.
if you think about it that way it's so expensive isnt it?

I am just messing with ya.

[wparsons]

If you're going to replace OP and the header, do them at the same time. Swapping the OP typically requires lifting the engine up a bit, so might as well do it once when you're connecting the header to the OP anyway.