kaa273

iTrader: (1)

I know they recommend you have your car remapped, but does anyone have one fitted and not had it remapped

martin850

iTrader: (51)

You can run it without a remap but to get the most benefit power wise then a remap is recommended.

Myles

iTrader: (40)

I had one fitted for about 18 months without a remap, I dont think the car ran as well as it should have though.

daz1968

iTrader: (13)

I fitted one to my wrx using prodrive map had no issues with it but I believe the sti responds differently and liable to over boost

kaa273

iTrader: (1)

would overboosting really be a problem (scoobyworld/works have said to get remap). Only thing is £550 on top of downpipe plus fitting is a big hit in one go

Midlife......

iTrader: (2)

What car have you got.........the TD04 of the WRX doesn't normally cause boost spikes with the de-cat.

The bigger turbos of the STi can cause a problem though if de-catted..

Shaun

kaa273

iTrader: (1)

uk 2002 WRX

Midlife......

iTrader: (2)

Same car as mine then.........just go ahead and fit it

The ECU will still throw in the correct amount of fuel for the air going in etc so there will be no increase in BHP. The noise will change and you will get a bit earlier boost but given the small turbo size no problems with boost spikes.

Then save up for an open source remap which I think is about £350 at the moment

Shaun

TIZERBOY

iTrader: (1)

I was thinking of doing the same mate having scoobyworld to fit a sports cat and fuel pump then not to long after getting an open source remap,,would it be ok on my JDM STI bugeye???

greatgonzo

iTrader: (1)

There's a company on here called "Engine mapper" who's doing open source mapping for £215.00 I think
Worth checking him out I think hes in the trader section.

Midlife......

iTrader: (2)

STi7 bugs do not like de-cats...........the larger VF turbo spools up earlier and the increase in boost isn't controlled adequatly by the ECU and can boost spike. In the olden days people drilled out the restrictor pil but nowadays it's very simple to get the ECU re-mapped.

You have to be a bit careful with boost if you change the exhaust and drive like a grandad until re-mapped LOL

Shaun

Kedlestone

iTrader: (9)

Just to ad, I have a 54 wrx and am going down the same route but with a full decat then a remap from duncan for £350

TIZERBOY

iTrader: (1)

If i fit a sports cat and drive out of boost i should be ok then,it just that scoobywould only do EcuTec remaps and i'd like to drive home and do an open source remap....

Kedlestone

iTrader: (9)

yeah should be fine there buddy

Wilky_Boy

I ran a sports cat on my 2004 WRX for 12 months before I had a remap. It ran fine, although as someone has already said you aren't getting the most from it. But I was like you - modding my car in stages and didn't want the expense in one hit. I think it's more of an issue if you do the uppipe too due to boost spike ( though as posted the TD04 is not that bad ). I just kept my eye on the boost gauge and then got the remap as soon as I could afford it.

TIZERBOY

iTrader: (1)

just thought i'd ask as anyone heat wrapped there sports cat down pipe? thinking about MOT time......

greatgonzo

iTrader: (1)

Yeah a good ideas to wrap keeps the temp lower under the bonnet and will help come mot time, you want to do it before its fitted tho as it would be a right bugger to do if all ready on the car.

If you do wrap, do the whole the down pipe not just the cat it will also get the gases out faster.