de catted turbo downpipe

i'd go for 3" and a sports cat instead of a complete decat

You may find that it'll throw up engine management lights, and fault codes, so you'll need the lambda sensor to sit out of the flow of the exhaust gases.

thats the point of revo st2 Tom, it disables the post lambda so no worrying about that...which i believe...he already has(or was planning to)

He doesnt say that, and I dont know whether he has or not.

Im a little busy to remember everyone elses mod's! Aint got time to fit my own!!

i have a spare broken cat.. so now have myself a proper de-cat... check this bad boy out.

im going to fit it along with revo stage 2.. and if it dont work I shall put a blueflame on... it cost nothing to make.. so nothing lost if it does not work.

if you were to fit a 3" downpipe an have the rest of the system 2.5" wouldnt it be the same as 2.5" all the way or is there any gains?

I had a 3" de-cat on mine for a while with no problem whatsoever and the power gains were great and i really felt the diference once it came to MOT time. Now ive got a 3" downpipe into a 3" sports cat an 2.5" back which works perfectly. Oh an yeh the de-cat will make it stupidly loud, you'l lose your exhaust tone and it will be replaced by pure engine grunt which sounds like a tank

dont know if this is any help but i had 1 lambda probe in and it ran like a sack of , welded a boss for the second one and it ran like a dream, so if you do go de-cat, make sure you have 2 lambdas in!!

hi, i'm running a 3'' downpipe and de-cat then its 2.5'' from there with only one silencer at the rear. i've had no problems at all and as myki said the gains really are great, you will notice a much faster spool time. on the down side u will get a bit more noise, on tick over its not much different but open it up on the road and you will have a completly different beast! but i guess it depends on what you use your car for, mine is not a daily driver so noise is not an issue, but its worth thinkin about if u are goin to do lots of long journeys, etc.

hi, i'm running a 3'' downpipe and de-cat then its 2.5'' from there with only one silencer at the rear. i've had no problems at all and as myki said the gains really are great, you will notice a much faster spool time. on the down side u will get a bit more noise, on tick over its not much different but open it up on the road and you will have a completly different beast! but i guess it depends on what you use your car for, mine is not a daily driver so noise is not an issue, but its worth thinkin about if u are goin to do lots of long journeys, etc.

everyone seems to be going 3" is 3" better than 2.5" if the rest of the system is 2.5"? does it allow it to spool that bit faster than 2.5" or will it be the same? i only have k03 so would 2.5" be better?