Gutted stock header and tune for same HP?

[LowAndSlowBecauseNoTurbo]

Originally Posted by MurderousPandas

I just got done running a gutted header, catless front pipe, and stock catback. Last week. It sounds bad, but there is some performance gain. And it does not smell in the car, even when on e85. Also, only the exit of the exhaust should smell, if it does elsewhere then you have an exuhast leak. I'm now running some cheap UEL headers while i wait for some nice ones.

"Chasing speed with patience"

what if I ran just the gutted header and left the cat in the front pipe? would that help with the sound or no sound and just interfere with the exiting exhaust?

[tyler_win_photo]

Originally Posted by LowAndSlowBecauseNoTurbo

what if I ran just the gutted header and left the cat in the front pipe? would that help with the sound or no sound and just interfere with the exiting exhaust?

It would likely sound better and not raspy. Tbh there are minimal gains to be netted on a catless front pipe, at least for NA. There are gains to be netted on a gutted header or catless header. Everything will require a tune for gains.

[LowAndSlowBecauseNoTurbo]

Originally Posted by tyler_win_photo

It would likely sound better and not raspy. Tbh there are minimal gains to be netted on a catless front pipe, at least for NA. There are gains to be netted on a gutted header or catless header. Everything will require a tune for gains.

Alright, yea that's what I was leaning more towards was just the gutted header to drown out some raspiness since everyone is saying it's raspy. But I am going to run stage 1 with my stock headers and then I'm getting another set and running stage 2 on the gutted headers


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[Ultramaroon]

Originally Posted by guybo

I'm running gutted cats and OFT stage 2. It was a big difference from Stage 1 with the cats. It sounds great too with a cherry bomb and Berk dual exit.

I get a lot of compliments on it.

Nice cap. Got some good cooter there.

[guybo]

That's my Sebring hat. I really want to go back this year but I have to wait until 2018. the 12 Hours is a lot of fun to go to.

Yeah I'm more of a Cooterized rolled bill kind of a guy not one of these flat bill punk kids running around today. LOL

[Lantana frs]

Originally Posted by guybo

I'm running gutted cats and OFT stage 2. It was a big difference from Stage 1 with the cats. It sounds great too with a cherry bomb and Berk dual exit.

I get a lot of compliments on it.

A lot of times when you hear bad things about gutting it's from people who have no experience with it. But it works and it made my car like it has a new engine- huge difference in power but I have yet to dyno it. But My 80-100 MPH time went down by about 1.5 secs and my 0-60 MPH time has lost close to a second too (still on stock tires).

I know the gains aren't the same as the high end headers, but you have the advantage of the stock heat shielding- there is no risk of cooking coils or anything else if you keep the stock heat shields. Also, OEM quality is top notch. No chance of cracked welds.

That really sounds good imo and I'm big into quiet. Lol.

[JazzleSAURUS]

Originally Posted by LowAndSlowBecauseNoTurbo

so you just have the header cat gutted and left the front pipe cat in tact? would the exhaust eat up the front pipe cat or no? but I was planning on running stage 1 until I bought another set of headers so I can keep the factory headers that came with the car in tact. I will definitely be looking more into before and after of the gutted headers and anymore information I should be informed about with the gutted header would be awesome

Precisely. I mean one cat has to be first against the exhaust stream.

I don't care if it gets eaten up, frankly. And if it fails totally and I want it replaced, I can go to the dealer and ask them why my car is stinky, and get them replaced within 100k as it's an emissions component.

[MurderousPandas]

Originally Posted by LowAndSlowBecauseNoTurbo

what if I ran just the gutted header and left the cat in the front pipe? would that help with the sound or no sound and just interfere with the exiting exhaust?

When i removed the cat in the header is when my exhaust got raspy, the air doesn't flow very well because where the cat once was is now just a chamber for exhaust gasses to get caught up in. When i ran a catless front pipe and stock catted headers, it sounded decent. If you can cut the cat and weld a pipe in, you'll get a better sound i would imagine, but i hated the gutted cat sound so much i bought some cheap headers to fix just the sound.

"Chasing speed with patience"

[guybo]

The difference with mine may be the cherry bomb. It cuts out any rasp and helped a lot with the Berk drone. Also a lot of people straight pipe it which gets rid of the resonator and that weird muffler thing in the stock front and mid pipes. All those help the sound a lot.

Also the Cooter hat helps a lot. Never underestimate

[Rezi]

Just curious. Did someone already swap the oem cat out for an hfc?

Thats what i am doing next week.

[LowAndSlowBecauseNoTurbo]

adding on to this OFT thread, would I be able to run stage 2 EL header tune on the stock headers? or would that mess anything up? I mean I'm picking up some headers later today but I just would like to know if I could hahaha

[ajcarson11]

Originally Posted by LowAndSlowBecauseNoTurbo

adding on to this OFT thread, would I be able to run stage 2 EL header tune on the stock headers? or would that mess anything up? I mean I'm picking up some headers later today but I just would like to know if I could hahaha

No. Do not do this. Very large chance you will damage something.

[LowAndSlowBecauseNoTurbo]

Originally Posted by ajcarson11

No. Do not do this. Very large chance you will damage something.

alright hahaha I kinda figured it couldnt be good but I just thought id throw it to the experts before I royally messed up hahaha

[MurderousPandas]

Originally Posted by LowAndSlowBecauseNoTurbo

alright hahaha I kinda figured it couldnt be good but I just thought id throw it to the experts before I royally messed up hahaha

It won't damage anything, but will drop performance as your car isn't setup properly for that tune. There's no life threatening difference from stage 1 to stage 2, the only difference is that one is meant for cats and the other catless.

"Chasing speed with patience"