PTUNING 4-1 Full T304 SS Equal Length Double-Slip Race Header (200+whp 93 pump gas)

[ecko04]

Originally Posted by dwx

I couldn't find anything in the thread, have you guys considering coating these at all?

You didn't look too hard

Post #13

Originally Posted by ptuning

Although we currently don't tune with OFT, we may actually consider working with a local customer to build our own dynotuned OFT OTS base map for use with this header. However, this would likely only happen if there was a big enough demand for it.

- Toan

Post #65

Originally Posted by ptuning

The ceramic header coatings that we dabbled with back in the day all seemed fine for daily driving and/or drag racing, but for HPDE or track events, the coatings seem to fade and eventually flake off over time. Mind you, they were on turbo headers/manifolds and not used in an NA application. These cars were also properly tuned, so we weren't dealing with abnormally high egts, etc.

Once the coating flakes off, it's all downhill from there. It doesn't affect performance, but it makes the coated part look pretty gnarly.

Given that our header is 100% T304 stainless steel (not 409), you could conceivable clean and polish up the header if you ever went to sell your car and do a part out. The chances of the ceramic coated part looking new after years of hard use is not so likely.

We would definitely not sway any customer away from ceramic coating, if he/she wished to do so. We would just prefer going with a heat shielding route like the factory does.

- Toan

[Turdinator]

Originally Posted by Norkoastal

Will this header work with an existing OFT EL tune? I'd like to not have to require custom tuning for exhaust parts while building up the car gradually.

It will work fine it just won't be optimised. So there will still be torque and power left on the table.

[Vic]

Originally Posted by ptuning

This header may work fine with a quality overpipe/frontpipe combo that utilizes the factory midpipe and possibly even the muffler section. We'll try to test and tune as many exhaust combinations as we possibly can once the production headers are on the shelf.

BTW, this video is more of a just-for-fun dyno video. Our very high CFM blower and extractor fans drown out a lot of the real sound. Furthermore, the test was conducted using an exhaust setup that we had readily available. We'll eventually develop a tuned exhaust front section combo that will perform and sound best with our header.

- Toan

Can you guys check if this will fit the 2.5" nameless fp/op (downpipe) combo?

*DROOLS*

[s30series]

I ordered one! Hoping it fits a motiv overpipe. Gonna have toppseed tune the car after I install everything. I assume these will ship end of September?

[Shady195]

I'm impressed.

Luckily (or unlucky LOL) I don't have the money to impulse buy at this moment so I can wait and see how other people make out with this header and hope someone comes out with a nice OFT tune or something of the sort I can see some dyno numbers on and flash.

I would never in a million years think of spending $1200 on a header but given the numbers shown, and hopefully other independents showing similar gains.. I Know where my next bonus check is going.

Great Job guys! Seriously its beatufiul and im glad its EL. As much as I love the sound of UEL on subys, I feel like this cars styling demands a smoother sound.

ALSO:

I'm not expert so i'm curious about the exhaust diameter. You used a 3" for your turbo setups and mentioned possibly making a ~2.5 inch for an N/A setup. Would the smaller diameter net more power or a smoother power curve for an N/A application? Less room for exhaust gasses to expand and become turbulent? It's quite often you see that people don't recommend larger piping for an N/A setup and that power can be lost in the process. My expanding gases/turbulence comment is my thinking on it but was wondering if you could clarify a little.

[ptuning]

Originally Posted by Norkoastal

Will this header work with an existing OFT EL tune? I'd like to not have to require custom tuning for exhaust parts while building up the car gradually.

It may produce better results than running a stock tune, but will likely still not be fully optimized to work with our header.

- Toan

[ptuning]

Originally Posted by Vic

Can you guys check if this will fit the 2.5" nameless fp/op (downpipe) combo?

*DROOLS*

If these pieces bolt up to the factory header perfectly, then it will work with our header.

- Toan

[ptuning]

Originally Posted by Shady195

I'm impressed.

Luckily (or unlucky LOL) I don't have the money to impulse buy at this moment so I can wait and see how other people make out with this header and hope someone comes out with a nice OFT tune or something of the sort I can see some dyno numbers on and flash.

I would never in a million years think of spending $1200 on a header but given the numbers shown, and hopefully other independents showing similar gains.. I Know where my next bonus check is going.

Great Job guys! Seriously its beatufiul and im glad its EL. As much as I love the sound of UEL on subys, I feel like this cars styling demands a smoother sound.

ALSO:

I'm not expert so i'm curious about the exhaust diameter. You used a 3" for your turbo setups and mentioned possibly making a ~2.5 inch for an N/A setup. Would the smaller diameter net more power or a smoother power curve for an N/A application? Less room for exhaust gasses to expand and become turbulent? It's quite often you see that people don't recommend larger piping for an N/A setup and that power can be lost in the process. My expanding gases/turbulence comment is my thinking on it but was wondering if you could clarify a little.

We'll eventually get around to testing our header with a 2.5" overpipe/frontpipe. Unfortunately, until then, we can't be absolutely certain which set-up will produce the best overall power curve. If it's anything like the K20 engine, it may produce the best powerband with a 3" exhaust system. We'll post our findings once we're able to confirm this.

- Toan

[Shady195]

Originally Posted by ptuning

We'll eventually get around to testing our header with a 2.5" overpipe/frontpipe. Unfortunately, until then, we can't be absolutely certain which set-up will produce the best overall power curve. If it's anything like the K20 engine, it may produce the best powerband with a 3" exhaust system. We'll post our findings once we're able to confirm this.

- Toan

I'm looking forward to it.

[Ernie L]

Originally Posted by ptuning

I have another interesting update for you guys.

As expected, we have no CEL's with our header. Our header does not require an 02 harness extension, O2 spacers or tubes, anti-foulers, or ECU DTC code disabling

What are the advantages of not disabling the O2/cat related DTC codes? You can bolt on this header and run it without worrying about CEL codes while you wait to tune. More importantly though, you'll be able to complete the OBD-2 readiness checks.

- Toan

Am I reading this correctly ..the front cat delete would not produce a fault code on an emissions check...if so ..would you take the time to explain how is this possible/accomplished... ?...thanks

[Trefoil]

Can't wait for them to go out!

[xwd]

Very very temping at the intro price.

[FirestormFRS]

Originally Posted by Ernie L

Am I reading this correctly ..the front cat delete would not produce a fault code on an emissions check...if so ..would you take the time to explain how is this possible/accomplished... ?...thanks

No one said that. Emissions check at in inspection would fail. Tuning eliminates the CEL.

[Ernie L]

Originally Posted by FirestormFRS

No one said that. Emissions check at in inspection would fail. Tuning eliminates the CEL.

Then what do you suppose they meant by this "More importantly though, you'll be able to complete the OBD-2 readiness checks"