1990RXHeaven

I've tried the search button and it isnt working right now for me. It says something like a proxy roblem or whatever, so bear with me please....

This summer I'm gonna do a new RB exhaust for my car and I wan't it from the headers back. I need to pass an upstate NY visual inspection every year though and was wondering if the Road Race cat replacement with presilencer will pass as a cat with a little coersion. Maybe if I say its a rotary thing and I don't need 2 cats. I'm not gonna weld an old cat over it though so if it won't pass then I'll figure something else out. Maybe a borla high-flow or something.
Also..... Will new headers pass a visual either?

I also tried searching another problem which I'm sure you could help me with.
My car always starts in cold start assist wth the revs jumping up to about 3k regardless of temp. Does my ecu just need to be reset or what. Thanks all.

BTW - If you have any other solutions for a cool but legal exhaust, lemmie know. You rotarheads can be so clever sometimes

Turbonut

iTrader: (1)

Without a cat you'll probably fail emissions anyway with no air tube. I would say that most designated inspection facilities would not recognize the RB silencer as a cat, unless you know someone and pass them some money.
Put trans in first gear on cold start. It will drop the revs considerably.
Why not just put a header and then a high flow cat with a nice cat back sytem. It'll give some sound, be emissions compliant and look good. Most I know about an n/a system.

1990RXHeaven

I don't need to run any numbers though, only pass a visual. But if a presilencer is not the way to go, maybe I should just get new headers and a high flow with the RB catback. Any reccommendations on who's or which? Will headers pass a visual. I'm not sure and I don't want a super noisy exhaust. Some noise is okay as long as it's a fairly low note at low rpms so I can still drive through my neighborhood without waking everybody up and stuff.

Mason Rx7

Don't leave your headers uncovered. There is a heat box around them for a reason. To help with heat soak. I don't know if they will attempt to remove the heatsheild because I don't have to worry about emissions but you should be alright with the heat box/sheild.

By all reports the RB system is fairly quiet so you should be alright there. I plan on picking one up this summer as well.

1990RXHeaven

but f i cant do the RB cat replacement, the what should i do for the cat? Also, most states have some sort of emissions policies.... How do others get around with this so-called straightpipe or presilencer deal? Bribe someone, put on a cat just for emissions, or what?

68Sniper

iTrader: (1)

Ive always been told that money talks and BS walks.

Mason Rx7

Here in OK we don't have inspection period.

I would suggest a high flow cat if you feel you must have one.

Or bribe someone.

ShadowX

For just passing emissions either get a good high flow cat and make the world a better place for the people driving behind you; Or get a cheap one that will fit for the inspection then take it out when you're done.

cluosborne

Rotary Performance offers a Bonez cat that'll bolt up to a RB header. www.rx7.com

The cat has an air tube, so you can retain the rest of your emissions.

Syonyk

See, I rather like the fact that nobody rides the rear bumper of my car for long.

I'll try to get some pics later today - I have a Racing Beat presilencer & cat replacement pipe on my 88 SE. It... doesn't look stock. Or even close to stock. I suspect it would take several green pieces of paper to make someone blind enough to not be able to tell the difference.

-=Russ=-

spot_skater

mine doesn't look stock at all either
shiney purpley/chromey thick *** steel...not stock on a 17 year old car :P

you might need to make friends with someone at an inspection station, that's what i am doing

and if that falls through i have a cat i can put on in place of the presilencer, just gotta weld on some flanges, cause i cut it off of the stock system when i put my RB stuff on

Shodanheart

You could try what I did, when I lived in a place that had emissions, I went around to the shops that replace windshields, and found a wind shield in the trash with a 1 month old inspection sticker on it. I carefully pealed it off, and put it on mine, no problems at all.

1990RXHeaven

Does anybody know if the bonez cat and rb headers combo comes with a presilencer? Either built into the bonez unit or separate along with the headers? It doesn't specify and buying the compatible cat alone doesnt come with the bonez presilencer attached.

Do I even need the presilencer with the bonez cat and rb headers. I need a moderately quiet exhaust.

Jager

iTrader: (10)

Headers + High Flo cat + RB cat-back would actually be a very mellow system. So sound isnt much of a problem. I say get the headers and presilencer (I ordered mine last night btw) and then buy a used high-flo cat (I have a superflo from Bonez just in case) or keep the stock exhaust just for inspection. My recommendation.

Also, bribing may work, but its not 'right' .

Marcus_F

I've got an RB header, high flow main cat, and an RB cat back. Over 4K it's horrifically loud. Anyone who says otherwise is mistaken.

If your inspector looks at a Racing Beat RR presilencer and through some form of coercion thinks he's seeing a cat, then why not just drive over in a Buick? The money you pay him will probably make it so he can't tell the difference between an Rx-7 and a minivan. The inspector may get confused if you weld a dummy air pipe to the side of the presilencer, but I doubt he’ll miss the fact that the pre-cat isn’t there. You may just have to bite the bullet and swap out exhausts every year. It’s not hard and it doesn’t take long. If you use stainless steel nuts and bolts with anti-seize, it’ll be a piece of cake. Go with cheap hardware and you’ll regret it.

1990RXHeaven

I think thats prolly the best advice. Go with headers and the presilencer with a cat back system and just go find nice, durable stainless steel stuff that matches the rusted over crap you just took off. Invest in some true wheel stands and I bet the swap only takes about an hour or so. It's only once a year for cryin out loud. Any other input or advice would be cool too now that I got such a great bunch of replies.

1990RXHeaven

By the way... Since I'll do the exhaust in 2 stages, which should I do first..... ie. Which will net greater performance: Headers and Presilencer combo or the Cat Back system? All racingbeat of course.

Marcus_F

If you're going with the Road Race exhaust, the header and precat wont' bolt to your OEM catback. Also, the Road Race catback won't bolt to your oem cat.





If you're going to piece it together, you'll have to go with the two into one header with a presilencer. That will bolt to the OEM catback. Also, that catback will bolt to your OEM cat