Hey Guys,

I have a 1990 CRX si with a d16 block - z6 head mini-me conversion. I have been thinking about putting exhaust on it. I want something that is going to give me more power, but not a whole lot of sound. I have been unable to find a system that would give me both while staying in a reasonable price range for a college freshman (or in my case, rat at VMI). Someone told me that going with bustom piping and throwing a muffler on there might be a way to go... So here are my questions...

1) Does anyone know the size of the stock exhaust on a 90 si?
2) As the single cams do not have a whole lot of power output as it is, would 2" be a good size pipe to move to?
3) Any shops in the Chesterfield/Richmond area that would do a good job putting a custom exhaust system on for me?

I appreciate the input guys.

Brian

 

Simply adding an aftermarket or customized exhaust will not yield a noticable power gain on a D-series.... even mini-me. However, if you still want to do it, look into 2.25 to 2.5 inch exhaust piping. Then decide what you want to do with the muffler. Stay away from "canister type" mufflers like the Apexi N1 or Tanabe racing medallion to avoid noise.

 

Okay, so would you suggest sticking with the stock system then?

 

We make custom mandrel bent exhaust, and we can def. make you a 2.5" exhaust system for a reasonable price, we can make it out of mild steel, and throw on a muffler of your choice(cheap or more expensive) So on the CRX we say, 250 for piping, flanges, hangers. and cheap but nice muffler 100. If you feel that's expensive, then go to a normal exhaust shop, they will be able to bend a normal exhaust that will not be mandrel. The mandrel will definitely give you more power gains.

 

to the guy up top --- sorry dude, but your info is a bit retarded... just cause an exhaust is mandrel bent, doesn't give you more HP. it SMOOTHS the TURBULENCE in the exhaust, so that it can flow easier/smoother, but doesn't give you more HP just cause of the bend. Don't sit there and tell people that just cause they're not getting a mandrel bend exhaust, that they won't have as much horse power. Thats the biggest crock of shit i've EVER heard from anyone, and its just like a businessman to try and sell you what he's got over anyone else. Personally i wouldn't buy from you just because well:

1: piping, flanges, hangers, etc., shouldn't cost $250. Maybe $150 tops - keep in mind the cr-x is half the length of a normal vehicle (i.e. 2000 civic).
2: What kind of mufflers do you ACTUALLY offer? Are they TRUE brand name products such as MagnaFlow? Borla? FlowMasters? or are they some no-named bullshit that you can lift with your pinky??
3: You refer to a mandrel, as if its like a "Port & Polish" for your exhaust. Which is ENTIRELY not true. All a MANDREL is, is a machine that BENDS METAL. NOTHING MORE. Stop trying to "Con" this guy into buying your exhaust system, just cause you have a mandrel to bend the pipes.

THE BEST WAY to gain HP from a new exhaust system, is a straight shot from the headers back. no bends, no nothing, just a straight pipe all the way back, but in doing this, u run the risk of "damaging" the exhaust pipe underneath, as there is no shield, or "cover" to protect it.

anyways - if you can get the chance, goto "Hi-Flo Custom Exhaust" in manassas, on Jerry's circle.

The guy who owns (and a personal friend of mine), his name is Scott.

First and foremost - you DONT need a 2.5" exhaust. Not a d-series WITHOUT headers...

If you HAVE headers, get a 2.25", not 2.5". You're going to NEED backpressure in order to actually feel some kind of power gains.

Too big of a pipe to push that exhaust through? and you're actually going to lose power than gain any.

All exhausts, regardless if its $50 from ebay, or $500 custom done, they won't give you much power gains. More over between 1hp - 5hp. In order to actually FULLY utilize a free-flow exhaust system, you're going to need the rest of the intake/exhaust system.

If you really wanna feel some power gains, get a cold-air intake from ebay (they work PERFECTLY fine for a fraction of the cost), a decent set of headers, & a full custom mandrel bent exhaust. If you're looking for more throttle response, get a short-ram intake kit. Weapon-R sells very good kits for short-ram setups, but they're not cheap, and not cheap for a reason.

As for a muffler choice, MagnaFlow is a really good decision when choosing a free-flow exhaust system. MagnaFlow is very quiet @ low RPMS (but still noticeable, but its not LOUD & raspy like a fart can/Apexi N1 does) but @ WOT - they'll make that exhaust sing very beautifully. check out www.magnaflow.com to hear some exhaust clips of some newer hondas with their mufflers on.

Hi-Flo's rates will be similar to that guy above me, generally same materials as well.
Also - scott generally takes about 30 min or less to make your exhaust.
PM me if you'd like the contact # for his shop - or you can whitepages.com it

later man