Does the overpipe really make a difference?

[FR-Sizzle]

Originally Posted by jflogerzi

Skip the intake. Here is what I would do in this order:

Tune
Header
Exhaust(sound purposes only)

Everything else can stay stock. The front and overpipe won't get you much.

Some vendors have said most of the gains are had at the front/overpipe. Just look at the Nameless Axle Back and Front/Over pipe combo. They said the mid pipe didnt get any gains when they did their R&D. I dont think it would be any different for any other systems. If I just bought my car I would do it in this order

Tune
Front/Over Pipe
Nameless Axle Back
Header
Perrin Silicone Tube/CAI or Drop In Filter/Perrin Silicone Tube/HKS Intake Duct
Mid Pipe for peace of mind and just to complete the whole system

[cslntuee]

Originally Posted by FR-Sizzle

Some vendors have said most of the gains are had at the front/overpipe. Just look at the Nameless Axle Back and Front/Over pipe combo. They said the mid pipe didnt get any gains when they did their R&D. I dont think it would be any different for any other systems. If I just bought my car I would do it in this order

Tune
Front/Over Pipe
Nameless Axle Back
Header
Perrin Silicone Tube/CAI or Drop In Filter/Perrin Silicone Tube/HKS Intake Duct
Mid Pipe for peace of mind and just to complete the whole syste

I thought(or heard) the major gain is from header, isn't it?


Thanks.

[FR-S Matt]

Tune + Header -> Overpipe + Front pipe > Drop-in/CAI > (Pick your flavor of catback). That's the best N/A performance and the order it goes in but they all work together even better when they are tuned together.

[jonbonazza]

As a side note, in order to install the overpipe, you will need to drop the header, so you might as well grab one of those while you are at it. You should at LEAST grab a new header gasket.

[Foobar]

I installed my Perrin OP without dropping the header or lifting the engine. I did have to remove the stock head shields first though. Then it was a simple matter of snaking the stock OP through and the aftermarket one back in.

[Anthony]

I didn't touch the header either. First I loosened the front pipe by dropping it off that bracket that's towards the rear of the front pipe. Then I took the shielding off the factory over pipe, completed the puzzle of getting it out, and puzzled the new one back in. No clearance issues or rattling. And I have USED Borla headers. People talk so much shit about them, but I've had zero problems in the 300 miles or so I've driven with them. PLM over pipe is doing just fine too. No CELs. Haven't even flashed with my OpenFlash Tablet yet.

Oh and the PLM over pipe came with two nice gaskets, so didn't have to reuse any of the oldness.

[jamesm]

if power is the primary concern i would just buy the largest diameter exhaust you can and plan to go FI in the future. you're pissin' in the wind trying to make real power NA.

if you don't plan on going FI then which brand of exhaust you buy, which components etc will have little impact on performance, good or bad. the gains to be had are within the margin of error. we're talking single-digit HP gains here, maybe teens with a tune.

as always the amount of power you make, and how consistently you make it, has more to do with your tune than anything else.

i'll note that i saw only minor gains with my turbo setup replacing the exhaust until the final piece was in place, then it was night and day. the whole thing had to be upgraded before the gains were even noticeable.

[bfrank1972]

Originally Posted by jamesm

if power is the primary concern i would just buy the largest diameter exhaust you can and plan to go FI in the future. you're pissin' in the wind trying to make real power NA.

if you don't plan on going FI then which brand of exhaust you buy, which components etc will have little impact on performance, good or bad. the gains to be had are within the margin of error. we're talking single-digit HP gains here, maybe teens with a tune.

as always the amount of power you make, and how consistently you make it, has more to do with your tune than anything else.

i'll note that i saw only minor gains with my turbo setup replacing the exhaust until the final piece was in place, then it was night and day. the whole thing had to be upgraded before the gains were even noticeable.

^ this, FI or E85 + tune makes the biggest difference, header helps with the dip and maybe a little on the curve but best bang for the buck aside from FI is E85 + a good tune if you have E85 conveniently vailable to you.

[OrbitalEllipses]

I TRIED to remove the heatshield, but the last bolt was heavily rusted AND hard to reach. Gave up and raised the engine and the OP just dropped out.

[CodyFRS]

Originally Posted by m.wood0213

Its a good idea and common plan but then you have to deal w/ the repercussions of the CEL.

It is fairly simple to manage CEL with no tune. $20 o2 spacer from Ft86speedfactory.com , a $5 app on iPhone or $15-$20 torque app on android, $25-30 on one of those Bluetooth receiver things that plug into your car so you can clear codes.

[StormTrooper]

Yes but the power comes mostly from the tune....

[Tansey86]

Originally Posted by Anthony

I didn't touch the header either. First I loosened the front pipe by dropping it off that bracket that's towards the rear of the front pipe. Then I took the shielding off the factory over pipe, completed the puzzle of getting it out, and puzzled the new one back in. No clearance issues or rattling. And I have USED Borla headers. People talk so much shit about them, but I've had zero problems in the 300 miles or so I've driven with them. PLM over pipe is doing just fine too. No CELs. Haven't even flashed with my OpenFlash Tablet yet.

Oh and the PLM over pipe came with two nice gaskets, so didn't have to reuse any of the oldness.

For your health.

[charged86]

yes buy over pipe plus catless midpipe and get a tune asap and only a panel filter

[ramiram1984]

And the sound will be little more aggressive with OP installed as opposed to stock.