Exhaust systems for N/A

B.Martin · May 31, 2011, 11:53:12 AM

IMHO you may as well get a full system, easier, cheaper, better for fitting. No messing about welding pipes together etc. Plus with a full system, you\'ll have all you need minus the de-cat pipe and the manifold. There are also manifolds on ebay, however they might be turbo ones i can\'t remember.

dthebuk · May 31, 2011, 02:30:35 PM

you wont need a downpipe. The racing beat header is shaped to be very unrestrictive and finishes under the car where you would expect a downpipe to finish. You\'d need (i think) The header and a custom mid pipe. Or the header and pre silencer. Not sure if the latter would be a direct fit. Getting a single pipe made up would probably be cheaper than the racing beat item

if you the bin the cat\'s/thermal reactors/air pump you\'ll need to find a freidnly mot tester.

I\'ve never removed the emissions stuff myself, but people generally to run into problems with it etc. Deffo worth it though

B.Martin · May 31, 2011, 02:48:54 PM

On a pre \'90 car i thought there was no emissions test?

yiug412 · May 31, 2011, 02:53:45 PM

Have u tried MIJ in Birmingham? I got my cat back twins large back box from them for 360. As for the header I suggest u go to with a famous brand for good power. As the header is important on NA as it is very dependent on the pressure wave in the exhaust system to get all the exhaust gas out of chamber. Different length of the separate part will creat different effect on different rev

dthebuk · May 31, 2011, 03:04:23 PM

i think its pre 95 don\'t need cats.

I\'ve had a number of cars fail on emissions (pre 90). I think there is a different test, though they still definately get tested.

B.Martin · May 31, 2011, 03:20:34 PM

Interesting, i was lead to believe that there wasn\'t an emissions test on the older cars as they were manufactured before all this eco freindly bull sh!t.

MrHanky · May 31, 2011, 03:22:12 PM

Yep you definately still get emissions tested. Mine failed last week by a country mile. Fortunately just before I started trying to sort emissions out the MOT tester turned friendly and my car flew through

Mark

Brett · May 31, 2011, 03:36:20 PM

Can\'t beat a tame MOT tester!

m1tch · May 31, 2011, 04:48:19 PM

Quote from: BenRX;765956Interesting, i was lead to believe that there wasn\'t an emissions test on the older cars as they were manufactured before all this eco freindly bull sh!t.

Yeah, there is a test when emissions aren\'t tested, I believe its before 1974, mines a 91, the CO % max is like 3%, my turbo II is curently decatted and is at 0.18%

Kamatari · May 31, 2011, 05:58:08 PM

i know my mx5 is an 89 and thats emissions tested although decatted it ended up lower than when it had the cat on lol

So my best option is going to be importing a racing beat header and then a mid pipe, just a shame i cant find anything in the uk to save on shipping it over etc... As for trying MIJ in birmingham, the car has already had a twin catback exhaust made up by them already which is why im after everything but that

If i brought a decat off ebay would that solve the need of needing a midpipe/presilencer?

dthebuk · May 31, 2011, 07:38:18 PM

Quote from: Kamatari;765997So my best option is going to be importing a racing beat header and then a mid pipe, just a shame i cant find anything in the uk to save on shipping it over etc... As for trying MIJ in birmingham, the car has already had a twin catback exhaust made up by them already which is why im after everything but that

If i brought a decat off ebay would that solve the need of needing a midpipe/presilencer?

Give Mazda Rotary Parts or Rotechniks a call. They\'re both racing beat suppliers in the uk.

If you speak to rotechniks they really really know there stuff when in comes to racing beat products, they may have something sitting on the shelf you can use

Kamatari · August 10, 2011, 06:39:02 PM

Bringing up a slightly old thread and still looking at exhausts

from racing beat i could get their streetable header and presilencer for around $600 or i could just get the cat replacement pipe (downpipe) and presilencer for about $400

both of these options would eliminate the thermal chambers and cat (well the stock one anyway) but what differences would i notice by getting the header compared to just the downpipe?

Also would each option require all the air pump stuff removed or could i leave it all in place?

m1tch · August 10, 2011, 06:42:10 PM

If you have the OEM EGI header going spare I will take it, I know someone who needs one

Kamatari · August 10, 2011, 09:42:01 PM

dont have one yet but depending on what route i take