What exhaust parts do I need?
#1
Scooby Regular
Thread Starter
iTrader: (1)
Join Date: Oct 2010
Location: Darlington
Posts: 500
Likes: 0
Received 0 Likes
on
0 Posts
What exhaust parts do I need?
I have a 2005 WRX with the standard exhaust setup with the exception of an STI rear backbox on it. Before I get it mapped I want to make sure that I have made enough adjustments to the exhaust system to get the best value out of the map. I also want it to be:
1. MOT friendly, which from my reading I think means that I can't go fully decat and would be better going for a sports cat (is this bit correct?).
2. Not very loud. I don't mind a slight increase in sound but would prefer for it to be minimal, which again from my reading suggests going for resonated rather than non-resonated parts (is this bit correct?).
Could anyone help me out and suggest what individual parts I would need (and roughly how much you would expect them to be) to get to where I want as I will need to spread the purchasing out over a few months so I'd prefer to get them one-by-one rather than as part of a full system (but if that is the better option, then just say).
Cheers!
Mark
1. MOT friendly, which from my reading I think means that I can't go fully decat and would be better going for a sports cat (is this bit correct?).
2. Not very loud. I don't mind a slight increase in sound but would prefer for it to be minimal, which again from my reading suggests going for resonated rather than non-resonated parts (is this bit correct?).
Could anyone help me out and suggest what individual parts I would need (and roughly how much you would expect them to be) to get to where I want as I will need to spread the purchasing out over a few months so I'd prefer to get them one-by-one rather than as part of a full system (but if that is the better option, then just say).
Cheers!
Mark
#2
If you want the most from the remap get a decat uppipe, one from a classic or newage sti will do, a used ppp downpipe and second decat, prodrive intercooler hose and a panel filter best to get a deresonated centre and possibly used prodrive backbox as well should give about 280bhp, If you want to save a bit just fit a second cat delete, panel filter and prodrive intercooler hose and prodrive backbox, a remap on this will give about 265bhp as thats what prodrive pack on wrx is, so only about 15bhp less for a much smaller cost. depends how much you want to spend really.
#3
Scooby Regular
iTrader: (10)
I have a 2005 WRX with the standard exhaust setup with the exception of an STI rear backbox on it. Before I get it mapped I want to make sure that I have made enough adjustments to the exhaust system to get the best value out of the map. I also want it to be:
1. MOT friendly, which from my reading I think means that I can't go fully decat and would be better going for a sports cat (is this bit correct?).
2. Not very loud. I don't mind a slight increase in sound but would prefer for it to be minimal, which again from my reading suggests going for resonated rather than non-resonated parts (is this bit correct?).
Cheers!
Mark
1. MOT friendly, which from my reading I think means that I can't go fully decat and would be better going for a sports cat (is this bit correct?).
2. Not very loud. I don't mind a slight increase in sound but would prefer for it to be minimal, which again from my reading suggests going for resonated rather than non-resonated parts (is this bit correct?).
Cheers!
Mark
http://www.scoobyworld.co.uk/catalog...hp?cPath=24_53
#4
Scooby Regular
iTrader: (60)
Join Date: Apr 2010
Location: West Mids
Posts: 2,567
Likes: 0
Received 0 Likes
on
0 Posts
1. yes for the car to be friendly you will need a sports cat, you can either get one second hand from the for sale section on here or new from scoobyworld or another performance site.
2. yes get the resonated centre section, again, new or used and i think a used prodrive back box would suit your needs, it is very civilized.
2. yes get the resonated centre section, again, new or used and i think a used prodrive back box would suit your needs, it is very civilized.
#6
Scooby Regular
Thread Starter
iTrader: (1)
Join Date: Oct 2010
Location: Darlington
Posts: 500
Likes: 0
Received 0 Likes
on
0 Posts
OK, thanks for the responses, I think I understand. Just to be clear though, if going for new parts I could go for something like:
1. Centre Section (Resonated) http://tinyurl.com/2wbyno8 £125
2. Front Pipe & Sports Cat (is this also known as a downpipe?) http://tinyurl.com/38zljq6 £225
I also saw while browsing a Second De-Cat Pipe (is this also known as an uppipe?) which said when fitted that although it was de-catted it would still allow the MOT to pass:
3. Second De-Cat Pipe http://tinyurl.com/2wpsewx £55
So could I also fit this as an extra to help with the airflow?
Cheers for the help, I'm doing loads of reading and think some of it is starting to sink in!
1. Centre Section (Resonated) http://tinyurl.com/2wbyno8 £125
2. Front Pipe & Sports Cat (is this also known as a downpipe?) http://tinyurl.com/38zljq6 £225
I also saw while browsing a Second De-Cat Pipe (is this also known as an uppipe?) which said when fitted that although it was de-catted it would still allow the MOT to pass:
3. Second De-Cat Pipe http://tinyurl.com/2wpsewx £55
So could I also fit this as an extra to help with the airflow?
Cheers for the help, I'm doing loads of reading and think some of it is starting to sink in!
#7
Scooby Regular
iTrader: (60)
Join Date: Apr 2010
Location: West Mids
Posts: 2,567
Likes: 0
Received 0 Likes
on
0 Posts
yes will help the extra airflow but don't forget the pro-drive back-box. also a full down-pipe in the link you have provided eliminates or involves two cats the main one and then a second one. so if you buy a full down-pipe like the one in the link the you don't need a second de-cat pipe as it is already eliminated.
Trending Topics
#8
Scooby Regular
Thread Starter
iTrader: (1)
Join Date: Oct 2010
Location: Darlington
Posts: 500
Likes: 0
Received 0 Likes
on
0 Posts
OK, thanks so if I read that right that looks like I'm back to just having to buy:
1. Centre Section (Resonated) http://tinyurl.com/2wbyno8 £125
2. Front Pipe & Sports Cat (is this also known as a downpipe?) http://tinyurl.com/38zljq6 £225
But I also need a prodrive exhaust instead of the one I got from a standard STI? And will this add much extra noise though as if it adds a fair bit I think I'd rather miss out on some bhp and keep a similar level?
Cheers!
1. Centre Section (Resonated) http://tinyurl.com/2wbyno8 £125
2. Front Pipe & Sports Cat (is this also known as a downpipe?) http://tinyurl.com/38zljq6 £225
But I also need a prodrive exhaust instead of the one I got from a standard STI? And will this add much extra noise though as if it adds a fair bit I think I'd rather miss out on some bhp and keep a similar level?
Cheers!
#9
I had a prodrive backbox with a decat uppipe, ppp downpipe, decat 2nd pipe and deresonated centre, ie straight through no silencer and it was not overly loud at all, in fact sounded just right on cruise and wot. I later fitted the std uppipe back on and the std downpipe, so just had std wrx ppp exhaust with deresonated centre and that was not much different to be honest. The prodrive back box is very quiet but does unlease a nice burble that is lacking on std exhaust.
#10
Scooby Regular
Thread Starter
iTrader: (1)
Join Date: Oct 2010
Location: Darlington
Posts: 500
Likes: 0
Received 0 Likes
on
0 Posts
OK cheers, if there isn't much noise difference then I don't mind going for it. Out of interest do you think there would be much bhp difference between a standard STI and PPP backbox when remapped?
#11
#12
Scooby Regular
iTrader: (60)
Join Date: Apr 2010
Location: West Mids
Posts: 2,567
Likes: 0
Received 0 Likes
on
0 Posts
there wont be much of a difference between the two exhausts power wise unless you are going for big power, as some exhausts choke the car past certain power levels, the prodrive exhaust is ok till around 370 bhp.
Thread
Thread Starter
Forum
Replies
Last Post
Mattybr5@MB Developments
Full Cars Breaking For Spares
28
28 December 2015 11:07 PM