Exhaust Systems

[lukes200]

Im thinking of getting a exhaust system on my car, i have just spoke to a local guy who has made a exhaust for me before on my rs and he said having a decat on a lex is pretty loud and said i may be better of with just a cat back! how loud are they? is it worth having a decat or not? could anyone enlighten me on this please?

cheers

luke

[mattc]

Might not pass the emissions with no cat as well.

[garyskisplym]

Or you could look into getting sport cat, which is hi- flow cat but car should still meet emissions test.

Also does anyone know how restrictive the standard manifolds are.

Gary

[lukes200]

Might not pass the emissions with no cat as well.

im not not bothered about passing the emissions there is ways round that! lol. who has got a exhaust? would you recommend having 1?

[kam05]

im not not bothered about passing the emissions there is ways round that!

Do tell...

[lukes200]

im not not bothered about passing the emissions there is ways round that!

Do tell...

A friend of the family owns a MOT garage.

[plumo]

http://www.youtube.com/watch?v=KFnqSNyhYGE mine no centre box

[Asi]

well if you can get away with why not but i reckon it would just be too loud (chavy!!!)

[plumo]

i wish id kept my centre box in now not realising how lous it was until it was on :( miite get a little centre box welded in..

[ormi]

i wish id kept my centre box in now not realising how lous it was until it was on :( miite get a little centre box welded in..

mine's slightly louder than that but its a deeper more boomy noise if you know what i mean.

[Asi]

Ormi exhaust sounds very nice

[griderjn]

i did not realize the catalytic converter had anything to do with sound?

i thought that was the muffler?

i have a sport cat, and i am still working on venting issues.

also, my header is way less restrictive, have a look at the pics in my profile.

[wonga121]

i did not realize the catalytic converter had anything to do with sound?

i thought that was the muffler?

i have a sport cat, and i am still working on venting issues.

also, my header is way less restrictive, have a look at the pics in my profile.

i got a dual sport cat back exhaust system on IS

done my MIJ for about 550GBP

[garyskisplym]

i did not realize the catalytic converter had anything to do with sound?

i thought that was the muffler?

i have a sport cat, and i am still working on venting issues.

also, my header is way less restrictive, have a look at the pics in my profile.

i got a dual sport cat back exhaust system on IS

done my MIJ for about 550GBP

Are you running one or 2 pipes under the car??

Does anyone know if it is possible to get ride of the part of the manifold where the two pipes meet (Exhaust manifolds from the block) and run two separe pipes completly under the car??

[wonga121]

The one on mine is only running on 1 main pipe then seperate near the rear axis...if i can rmb correcly...

i did not realize the catalytic converter had anything to do with sound?

i thought that was the muffler?

i have a sport cat, and i am still working on venting issues.

also, my header is way less restrictive, have a look at the pics in my profile.

i got a dual sport cat back exhaust system on IS

done my MIJ for about 550GBP

Are you running one or 2 pipes under the car??

Does anyone know if it is possible to get ride of the part of the manifold where the two pipes meet (Exhaust manifolds from the block) and run two separe pipes completly under the car??

[Yeldarb]

No cats on mine, but I don't have to worry that much about the emissions :D

[StuP]

I have a Janspeed cat back exhaust and have just put in a decat pipe. Nice thundery sound (not too loud) from exhaust (better without the cat) and much better throttle response. The pre-cats on the manifold help with emissions and the Is200 engine is quite a clean runner anyway.

[CHAV MASTER]

I have a Janspeed cat back exhaust and have just put in a decat pipe. Nice thundery sound (not too loud) from exhaust (better without the cat) and much better throttle response. The pre-cats on the manifold help with emissions and the Is200 engine is quite a clean runner anyway.

i have a de-cat put on yesterday an today its brought the engine management light on any ideas on a way round this

ive had it switched off @ a garage but it will probly come back on..

[jameshunter2010]

the decat down pipe is verry loud

the police will just give u a fine for the noise ,your better off with a high flow back box

[sorted vti]

i have a blueflame exhaust on mine with a straight pipe instead of the cat. passes emissions fine without a cat.

sounds great but can get a bit loud when u have a long run on the motorway.

[ormi]

heres two videos of mine stainless system(custom made)and i'm running a prolex manifold(no pre cats)but keeping the main cat.

[StuP]

I have a Janspeed cat back exhaust and have just put in a decat pipe. Nice thundery sound (not too loud) from exhaust (better without the cat) and much better throttle response. The pre-cats on the manifold help with emissions and the Is200 engine is quite a clean runner anyway.

i have a de-cat put on yesterday an today its brought the engine management light on any ideas on a way round this

ive had it switched off @ a garage but it will probly come back on..

No issue when I put mine on mate so not sure whats causing it. All exhaust related sensors are positioned in similar locations to the OEM system. I found it gave a slightly deeper exhaust note, especially at over 400 rpm but ont excessive. Did you buy a bolt on decat pipe like mine or get a garage to weld you one in?

[CHAV MASTER]

I have a Janspeed cat back exhaust and have just put in a decat pipe. Nice thundery sound (not too loud) from exhaust (better without the cat) and much better throttle response. The pre-cats on the manifold help with emissions and the Is200 engine is quite a clean runner anyway.

i have a de-cat put on yesterday an today its brought the engine management light on any ideas on a way round this

ive had it switched off @ a garage but it will probly come back on..

No issue when I put mine on mate so not sure whats causing it. All exhaust related sensors are positioned in similar locations to the OEM system. I found it gave a slightly deeper exhaust note, especially at over 400 rpm but ont excessive. Did you buy a bolt on decat pipe like mine or get a garage to weld you one in?

i bought 1 online £120

[StuP]

I have a Janspeed cat back exhaust and have just put in a decat pipe. Nice thundery sound (not too loud) from exhaust (better without the cat) and much better throttle response. The pre-cats on the manifold help with emissions and the Is200 engine is quite a clean runner anyway.

i have a de-cat put on yesterday an today its brought the engine management light on any ideas on a way round this

ive had it switched off @ a garage but it will probly come back on..

No issue when I put mine on mate so not sure whats causing it. All exhaust related sensors are positioned in similar locations to the OEM system. I found it gave a slightly deeper exhaust note, especially at over 400 rpm but ont excessive. Did you buy a bolt on decat pipe like mine or get a garage to weld you one in?

i bought 1 online £120

Thats probably the same as I've got then. Can't see why the engine light comes on but do a ECU reset and hope it stays off after that as i think the increased flow causes it to come on as its out of the set tolerences but resetting creates a new baseline value based on the new flow rate and should be ok.

[smokeybaz]

I have a Janspeed cat back exhaust and have just put in a decat pipe. Nice thundery sound (not too loud) from exhaust (better without the cat) and much better throttle response. The pre-cats on the manifold help with emissions and the Is200 engine is quite a clean runner anyway.

i have a de-cat put on yesterday an today its brought the engine management light on any ideas on a way round this

ive had it switched off @ a garage but it will probly come back on..

No issue when I put mine on mate so not sure whats causing it. All exhaust related sensors are positioned in similar locations to the OEM system. I found it gave a slightly deeper exhaust note, especially at over 400 rpm but ont excessive. Did you buy a bolt on decat pipe like mine or get a garage to weld you one in?

i bought 1 online £120

Thats probably the same as I've got then. Can't see why the engine light comes on but do a ECU reset and hope it stays off after that as i think the increased flow causes it to come on as its out of the set tolerences but resetting creates a new baseline value based on the new flow rate and should be ok.

should he not just get his ecu remapped after all modifications have been made to exhaust and and air filters, that should sort the engine management warning light too i would have thought, and is it not a must to get your ecu mapped after new exhaust, especially with the decat pipe