the_big_1

iTrader: (1)

Will a STI 2.5 2006 deffo not need remapping if the second cat is removed, leaving the first cat in the down pipe fitted?

Scooby_Stu_

iTrader: (12)

Yes deffo ok, remap only needed if downpipe cat removed.

the_big_1

iTrader: (1)

Might do that then while saving up for a first decat and remap

53

iTrader: (41)

Can I just say. On my MY06 STI Hawkeye I am running the Sports cat DP and second cat pipe which was taken off my MY03 Blob WRX when I traded it in. Direct fit. As single parts they are incompatible with the OEM Hawkeye set up, but as 2 combined parts they will fit universally between all NewAge UK WRX's and STi's. This is also true of all cat back exhausts.

the_big_1

iTrader: (1)

So in theroy, most of the full de-cat down pipes would fit, just not the two piece ones mixed up etc.

53

iTrader: (41)

You may still get some overboost even just removing this cat. I have heard of a few people complaining of fuel cut overboost post second cat removal full throttle 4th 5k revs change to 5th full throttle again c.5k revs. Fault code P0244 IIRC.

53

iTrader: (41)

Correct, with normal 2.5/3" bore considerations. Mixing 'either or' would come up short or long depending on the mix lol

the_big_1

iTrader: (1)

Normaly I change at say 4.2K 4.5K in most gears, never above and up to now, never droped a gear to rev above these either, so should be OK?

Scooby_Stu_

iTrader: (12)

yeah a downpipe and second cat off a blobeye will fit as the overall length is the same as the overall length of a hawkeye combination, but you can't mix the two.

Scooby_Stu_

iTrader: (12)

Never had a prob with mine, drove it for 3 months with 2nd cat removed.

the_big_1

iTrader: (1)

First of these should be OK?


SUBARU IMPREZA TURBO 2.5 WRX STI 2006> - 2ND DE CAT on eBay (end time 07-Jan-10 00:27:18 GMT)

Will this one one be ok too?

SUBARU IMPREZA NEW AGE WRX STi 1ST DE CAT EXHAUST DECAT on eBay (end time 12-Jan-10 16:50:01 GMT)

Scooby_Stu_

iTrader: (12)

the second one is for a blobeye and will be to long for the 2nd cat pipe

Scooby_Stu_

iTrader: (12)

you can use the second one if you get a matching blobeye 2nd cat pipe, but come mot time your original 2nd cat pipe will not fit.

53

iTrader: (41)

Only heard about STi's with VF43 rather than the TD04.

I'd jump on the H&S GB running atm if it were me

Scooby_Stu_

iTrader: (12)

True i was running with a td04 at the time, got a vf43 in now

the_big_1

iTrader: (1)

Exhausts UK are doing a full first and second decat pipe with a 200cell sports cat for £265. How would this compare to a full decat and remap?

Scooby_Stu_

iTrader: (12)

Thats a very good price, but some sports cats are useless, better of going full decat.
Don't they do a decat down pipe.??

the_big_1

iTrader: (1)

Yeah they do, they say on there website "200 cell Sports catalyst.

(We have stopped making the 100 cell version due to cars not passing the MOT levels . )

Fits All Turbo Models 94 - 07

This part fits from the Turbo to the center section, Tig welded 3" bore grade 304 stainless steel with open neck design , 200 cell Sports Cat , which will increase power gains up to 20BHP from the standard catalyst. "

the full decat pipe is £135 but means freindly MOT station or pipe change at MOT time.

Scooby_Stu_

iTrader: (12)

if it's a 200 cell it's not much better that a standard cat. they stopped making the 100 cell due it not passing a mot lol.

Scooby_Stu_

iTrader: (12)

look at where the cat is in the picture on cobra's website, it's in the same place a the standard 2nd cat.

the_big_1

iTrader: (1)

So no sports CAT is any good then, looks like a full decat is the only option, £135 for full decat one piece or £195 + £103.50 for the H&S two piece.
whats wiered is theat H & S also call them newage parts like they do on ebay but ebay are wrong?

the_big_1

iTrader: (1)

Yeah but its a one piece pipe replaceing the 1st and 2nd cat with one sports cat.

Scooby_Stu_

iTrader: (12)

Newage is any thing after the classic, so bugeye, blobeye, hawkeye and hatchback.
You need to go by date 2006-2007. It's very misleading.

Scooby_Stu_

iTrader: (12)

Sports cats are normally on the downpipe like the prodrive ones.

the_big_1

iTrader: (1)

Yeah that on their website is the down pipe, its a one peice down pipe.
and I know what you mean, very few ever mention any Scoobies at 206 - 2007, usualy upto 2006.