De-cat on standard exhaust

The "S" express · Post by **honda-hardy** » Sun Mar 17, 2013 10:47 pm

i disagree, i put a decat on my 2.oi 4th gen and it made the car more responsive and smoother acceleration.

Post by **indigolemon** » Sun Mar 17, 2013 11:00 pm

I suppose it would depend whether or not the car is in good condition, if it's collapsed inside I could understand why a decat would improve response etc.

bb1boy · Post by **bb1boy** » Mon Mar 18, 2013 10:02 am

Surely a de-cat will always improve response over a catted exhaust (whatever the condition of the cat) as there's so much less restriction..? I de-catted my 2.2 and it made a good difference, I don't see why it won't make a difference on a 2.0 - but then, I'm probably wrong!!

Post by **Merlin** » Mon Mar 18, 2013 10:06 am

Is the hassle worth it on a manily standard, untuned car? More so on a 2L. Unless you have a freindly MOT guy its a right PITA to get under the car twice a year to swap it over, all for a bhp or two and extra noise.

Post by **vanzep** » Mon Mar 18, 2013 10:22 am

If its just to get a louder exhaust note and maybe +/- 1 bhp then might be better fitting an induction kit and keeping the exhaust as standard

craig_jdm · Post by **craig_jdm** » Mon Mar 18, 2013 10:26 am

yeh any car originally fitted with a cat will now fail an mot even if it passes the emotions test if it is not fitted when it gets tested

Nik_L · Post by **Nik_L** » Mon Mar 18, 2013 11:08 am

I would say yes do it.

Its like most other small bolt on mods, it might not make a massive difference on a dyno, but can still massively change the characteristics of the way the car drives.

For instance, Vauxhall's C20XE with a de-cat is like night and day compared to having a cat fitted. They rev alot free'er and the engine dosn't feel suffocated. You can easily feel the difference straight away.