91REX

I am trying to find a good exaust system but not put a gun to my budgets head. The exaust offered on www.rx7.com Anyone have any experience with it? The price is nice but but the piping is only 2inches. What is the stock piping?

Also, the racing beat exaust is about 120 dollars more but again 2inches.

So.....should I buy one of these affordable systems or save up awhile and purchase the Greddy/Apex dual systems. I am looking for good performance gains as well as my wallet.

This is alot of questions but anyone who can answer all of them gets a big cookie.

Ryde _Or_Die

Try corksports system. corksport.com

fast13b

Tell me what car you have and what you want to do with it, and I'll help you not to waste your money.

~Jeremy

rico05

I run a Racing Beat header, Racing Beat presilencer, and Racing A N1 Spec SS single muffler on my 91 n/a. Cost me about $800, but man it is COOL!!

91REX

I have a 1991 NA 5spd. Car has intake. I just changed the oil, tranny fluid, cooland, plugs and wires to NGK. Car was just painted gloss black with the badges painted in victory red. Interior is all black/red (steering wheel, shifter, shift boot, gauges, mats and seats.)

So now that the looks are done and so is the preventative maintenence, I am looking towards the performance. Intake/exaust/MDracing chip/pulleys and when the motor goes than a rebuild with street port. And eventually a 40 wet shot. But for now I need to get adivce on the exaust....one thing at a time. Oh and the engine has 130k but has been well maintained.


About the corksport, its too loud and I prefer to keep the dual look. Thanks.

Ryde _Or_Die

Too tell the truth, your best bet is to have a custom-made exhaust system. You want a header right? And you are worried about how loud it is right? Well you really need a presilencer(s) if your worried about sound in an NA. I bought the true-dual header for my NA but never used it at all. I was planning on using that and buying 2 presilencers and whatever mufflers I wanted and having a shop do the piping for me. Thats what I will be doing with my TII now but with a DP/MP instead of the header. I definitely agree with you on keeping the dual look though.

91REX

I am most likely not going to use a header. I was going to go with the Bonez Flo cat system. But anyways, thanks for the advice and keep it coming.

Fast 13B, I noticed you live near me. Am interested in setting up a race with guys from my racing crew. Are you interested at all or not okay with street racing?

Anymore exaust suggestions? Goin to sleep will check them in the morning and thanks again guys.

fast13b

There are some things that are worthwile to spend your money on and others are just frills. If you want to save $ for now look for the big hp improvements not the minor ones. I've done them all...

INTAKE: keep the stock air box and get a K&N drop in. They are about $50, and are cleanable. The stock air box is the only intake setup on the 2nd gen that will rout out to cold air, and the K&N is the ****.

EXHAUST: Shell out the bucks and get the Racing Beat full dual exhaust. If it is too much for you, keep the stock manifold (if you are on a budget headers are not worth it) and get the RB cat replacement pipe/ presilencer. Finish with whatever free flowing exhaust makes you happy, just remember most are too loud/ poor quality. I suggest the RB mostly because it will make the transition to the full dual cheaper later. It really is the only big power improvement for a n/a.

CHIP: Forget it. If you even go NOS you'll want a piggyback, if you ever go big porting you'll want a standalone. Basically leave this one alone till you are ready to go standalone.

PULLEYS: Money better spent elsewhere.

For a n/a, the only things that REALLY help are a good intake, good exhaust, IMHO an aluminum flywheel *yummy*, and the best tire and suspension you can stuff under there. Regularly replace everything rubber under the hood, and keep all the fluids fresh.

~Jeremy

fast13b

I'd be happy to race you at Qualcomm or Carlsbad, I don't do street racing anymore. Something about making payments on a car that isn't mine anymore just dosen't work for me. And, um, I hope you are thinking of something faster than your n/a...

Ryde _Or_Die

Oh and don't forget the best mod for the money is stripping the car

adamlewis

Racing Beat is the stuff! Ive never heard bad things about them

But that corksport exhaust is really nice too

fast13b

I stripped the hell out of my 88 GTU. I'll never do it again for a street car. For a track car, by all means, unless you are in a class that prohibits it.

Gefunk

Your best bet is to go buy two of the mufflers from corksport, since they are fairly cheap and just go to a custom shop. They should do it all for anywhere between 300-400 dollars and than on top of that I think the Corksport mufflers are between 70-100 or something so do the math. I payed 324 for the catback from corksport and 150 for Bonez RP. The car does look like it has one nut but hey that is cool and there is a lot more flow and mine cost me 450-500 something.

scathcart

[QUOTE]Originally posted by fast13b
INTAKE: keep the stock air box and get a K&N drop in. They are about $50, and are cleanable. The stock air box is the only intake setup on the 2nd gen that will rout out to cold air, and the K&N is the ****.

I disagree here. The stock airbox is a horrible restriction. Making a cold air box and keeping the stock air feed tube does the exact same job, if not better, of the stock air box.

CHIP: Forget it. If you even go NOS you'll want a piggyback, if you ever go big porting you'll want a standalone. Basically leave this one alone till you are ready to go standalone.
Standalone EMS on an n/a? Hardly necessary. How about using an S-AFC piggyback?
As for NOS, why would a piggyback chip be needed for a wet kit? This makes no sense. The fuel pressure, fuel jetting, nitrous jetting, and nitrous pressure regulate Nitrous Oxide injection, and the ECU runs the air/fuel injection normally.
You should never use a piggyback with a wet NOS setup.

PULLEYS: Money better spent elsewhere.
Agreed.
Efan, CDI box, street port are all better ideas...

91REX

Thanks for all the answers guys. So the racing beat exaust is a good one for the money and nets HP even though the piping is only 2inches. What is the stock exaust diameter size?

And fast 13b, the car I had in mind was one of the VR4s in my racing crew. I dont know what times you usually run, but I have some to accomodate you whatever they are unless you run 11s in which case I won't waste your gas.

91REX

One other thing, which is more free flowing: Mandrel bent 2inch piping or crimp bent 2.5inch piping? Shank you.

Ryde _Or_Die

I think this question could vary. I mean I am sure you can make 2.5" crimp bends flow better than 2" mandrel bends but I don't really see that happening. Mandrel bends are better hands down. I really suggest you build a custom exhaust. Then you get exactly what you want and usually save quite a bit of money.

fast13b

Agreed. Electric fan frees up power, but it is a pain in the *** IMHO. Keep it simple. CDI box not necessary if on a budget. Wait till later. Street ports are great, drive the hell out of this one and do it on the rebuild...

~Jeremy

fast13b

Um, I screwed up the quotes a bit but its in there...

fast13b

The RB is perfect at 2". Keep in mind the pipes are seperate all the way back, so they don't have to be as big. 2" mandrel is better. Stock is only like 2-2.5" and it is for both rotors. Any bigger and the exhaust gases will swirl in the ppes and not exit as smoothly. BIGGER does not mean BETTER!

fast13b

[B]And fast 13b, the car I had in mind was one of the VR4s in my racing crew. I dont know what times you usually run, but I have some to accomodate you whatever they are unless you run 11s in which case I won't waste your gas.[B/]

I will NEVER take anything AWD off the line. Depending on how long the race is I bet I could catch up, unless he's like 500hp or something...
~J

wfenris

Single sided exaust flows better if you don't care about the looks at the rear.......where it splits in the Y piping it causes turbulance...

Kanaida

why waste your money on duals when you can get the same power ratio out of a single... not to mention the weight you'll save without haveing the y-pipe and the other muffler... Did I mention the single was LOTS cheaper than a dual? I was gonna go duals myself until I found out there's really no reason for it except looks.

-Kanaida

vinny

Any other suggestions? So....the Racing beat for 576 or the rx7.com exaust (same size piping) for 35X Anyone have either of these systems.

vinny

someone answer me damn you