Hi looking to get my 2004 sti type uk remapped soon so have started to get the bits ready for fitting i.e prodrive sports cat uprated fuel pump panel filter i dont have any cats in the rest of the exhaust but do i need to change the down pipe will it be a different size to the sports cat or is there a cat in the down pipe (so i need to change it anyway ?)i would like to get about 340 bhp what else do i need to get to get to these figures before i take it to be mapped cheers for your help

 

ot sure what you mean. First you say there are no cats then ask if there is one in the downpipe.

Basically unless you've taken them out you have cats up and down and by the sound of it have removed the centre one is that right?

The sports cat should go straight in for your old cat. Might want to remove the up pipe one though if you want more power as it restricts quite a bit i think... well at least on the wrx. Can't be certain about a sti.

5t.

 

There is no up-pipe cat on the STI!!

 

The prodrive sports cat should be a straight swap for the original catted down pipe! who is doing your REmap??

 

sorry yes i have removed the rear cat so there is a cat in the downpipe by the sounds of things so i do need to change that then if i am putting on a sports cat,so would just the sports cat on its own be ok for mot ? And with all the bits added and remapped what bhp will i get near! cheers

 

will be gettin it booked in with JGM for the remap i hope

 

Cool you are going down the same route as I want to
I don't need the uprated fuel pump though as the 2.5 litre is man enough I also want to use JGM but still saving
I think you will achieve between 300 bhp.-350 bhp. let me know how you get on.

 

cheers mate i will do i was going to totally decat but didnt want the hassle etc and have read good reports on the prodrive sports cat so have gone this way with a bit of luck i hope to be already and mapped just after xmas i cant wait

 

Was the Prodrive down pipe second hand?
I am still looking for one for mine they seen to be a little harder to get for the 2.5 litre and I don't want to spend more than £250 for it! I have found a couple but they are both 3".

 

yes was secondhand it was off of a wr1 same as you i have been looking for ages but feel now i am slowly getting to where i want to be lol just hope i am going in the right direction

 

definitely! you are doing the same as prodrive do but better and for not as much money £1700.
you are also getting a map that is perfect for YOUR car rather than a generic prodive one

 

sports cat is a good choice, passes MOT too... i think you should see 300+ easy mate after the remap with JGM

wiley

 

My 2004 STI made 325bhp and 287lb torque on a Dastek Rolling road.

Mods:

• Uprated fuel pump
• Prodrive cat (downpipe)
• Angled 4.5" back box
• Remapped ecu

I am fitting a TD05 18G at the moment so have a few of the old parts for sale including the remapped ecu & sports cat!

 

' jason and his scooby do ' let me know how you get on with your remap via private messgae please. i also have a 04sti uk. i was going to get the prodrive system like you have but finaly got an 3"milltek system purley because in the future i might want more power than 340 bhp and have been told the prodrive exausght can only handle 350bhp lol. i also have a 3 port boost solinoid and walbro 255 fuel pump and k&n panel filter.

 

As far as I know Prodrive didn't make a downpipe for the 2.5
The PPP for 06+ cars consists only of a 2nd decat pipe, backbox, an ECU remap and a silicone intercooler hose.
Let us know where to get a sports cat for the 2.5 as I am also looking for one (see post in Technical section regarding Milltek DP)
Cheers

 

Hi
Just joined the site looking for advice, I've got a 2000 turbo UK i have just put a front mounted inter cooler and have been told that i now need to get it re mapped. It also has an exhaust system, K&N air filter and the dump valve. I'm in Cambridge is there anywhere near if I need to get it done?
Any advice welcome
James

 

i will mate when i book it in with JGM i will be asking about how to get more power ready for the next stage lol as i have been told you always want more