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- - OBX Headers? (http://zr1.net/forum/showthread.php?t=13458)

Re: OBX Headers?

Quote:

Originally Posted by efnfast (Post 209857)

I did headers, exhaust, and chip upgrade. Went from 311 to 353 RWHP.

THat's a lotta' boost there Steve...

What's in the chip?

My second ship from Marc was only for 2nd deletion, I think. I could tell I was getting a little more twist; I'm guessing about 20 - 22? Maybe as much as 45 dB http://www.zr1.net/forum/images/icons/icon10.gif

Re: OBX Headers?

Quote:

Originally Posted by Schrade (Post 209866)

Had a Mark H chip, sent it back to be modified for exhaust work. Recently dyno'd again at 397 RWHP.

Re: OBX Headers?

Quote:

Originally Posted by efnfast (Post 209868)

Had a Mark H chip, sent it back to be modified for exhaust work. Recently dyno'd again at 397 RWHP.

Ok - this is interesting here...

I don't remember if I told him that I was doing new pipes.

Do I need to send it back to him? Anyone know if he keep logs of chip-work / chip ID's?

Re: OBX Headers?

Quote:

Originally Posted by Schrade (Post 209872)

Ok - this is interesting here...

I don't remember if I told him that I was doing new pipes.

Do I need to send it back to him? Anyone know if he keep logs of chip-work / chip ID's?

Did you send it to him after you installed your OBXs?

Re: OBX Headers?

Quote:

Originally Posted by KILLSHOTS (Post 209874)

Did you send it to him after you installed your OBXs?

He also changes if you pull the cats out. Let him know.

Re: OBX Headers?

Quote:

Originally Posted by KILLSHOTS (Post 209874)

Did you send it to him after you installed your OBXs?

No - he had it when I did the top end housecleanin', and it was for 2nd deletion. I said 'sometime' I would do the pipes, because he had asked about airflow mods.

I don't know if these psuedo-cats count for very much - I'm sure they're not for looks (or ARE they??? ), although Jeff [Shrek] wanted the new ones I got with the OBX, since he had given me his that were sewed up onto the X-section.................

I'll have to ring him soon here.

Re: OBX Headers?

Quote:

Originally Posted by Schrade (Post 209881)

Yep, those bullets that come with the OBX are just for looks, they're not cats at all. I guess they're meant to help with a visual inspection in states where that matters.

You should definitely send the PROM back to Marc. When you do headers, he adds fuel to support them and enables the anti-backfire. Until you do this, you won't produce all the power that adding headers allows. Marc does keep excellent records; that's how he was able to figure out that he hadn't enabled anti-backfire on mine without even having it in his hands.

Re: OBX Headers?

Glad the OBX came with the psuedo cats, in NH all we need is a visual inspection and the check engine light can't be on.

Re: OBX Headers?

Quote:

Originally Posted by efnfast (Post 209868)

Had a Mark H chip, sent it back to be modified for exhaust work. Recently dyno'd again at 397 RWHP.

What kind of mods did you have?

Re: OBX Headers?

Quote:

Originally Posted by Billy Mild (Post 209894)

What kind of mods did you have?

Stock, as I got it. 311RWHP. 309 TRQ
Headers, exhaust,chip. 353RWHP. 341 TRQ
Ported plenum and Injector Housing (IH) 397RWHP. 363 TRQ

Next major upgrade will be head work and probably reground cams.

Welcome BTW.