Exhaust options for 2.5 Hawkeye STi?
#4
Downpipe and front section are slightly different.
The 2.5 STi downpipe is slightly shorter and the front section slightly longer.
However, the total length is the same as the downpipe and front section of the 2.0 STi/WRX.
So if you get a downpipe and front section for a 2.0 STi or the more common longer downpipe that deletes the front section, it will marry up to the 2.5 STi centre section fine.
Centre section and rear box are the same.
However I would advise either a 2.75" or 3" system for the 2.5 STi.
The 2.5 STi downpipe is slightly shorter and the front section slightly longer.
However, the total length is the same as the downpipe and front section of the 2.0 STi/WRX.
So if you get a downpipe and front section for a 2.0 STi or the more common longer downpipe that deletes the front section, it will marry up to the 2.5 STi centre section fine.
Centre section and rear box are the same.
However I would advise either a 2.75" or 3" system for the 2.5 STi.
#7
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Scooby Regular
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That's great, thanks. I've been told I can fit a 2.0 Prodrive sports cat to my existing standard STi exhaust, but the way you've explained it sounds like that's not actually going to work?
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#8
Prodrive didn't fit a sports cat to the 2.5 so you need to check if it includes the front section or if the sports cat is a single pipe mating with the centre section, therefore the same length as the combined pipes of a 2.5 (hope that makes sense)
#11
most newage systems fit.
the only backbox that will not fit is a angled exit as it will foul the diffuser.
you really have to decide how loud you want it.
nur spec loud is hard to live with day to day.
prodrive is slightly to tame.
what are you after?
the only backbox that will not fit is a angled exit as it will foul the diffuser.
you really have to decide how loud you want it.
nur spec loud is hard to live with day to day.
prodrive is slightly to tame.
what are you after?
#12
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Scooby Regular
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Joined: Feb 2006
Posts: 1,521
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From: Leeds, West Yorkshire
I am probably going to go with the Prodrive sports cat and then some sort of 3/3.5" cat back system. I actually like the standard STi exhaust, it just needs to burble a bit more and perhaps a very slight increase in volume. As the car is a Spec D, I kind of want something more in keeping with the character of the car than something that's loud for the sake of it.
I may invest in one of the Scoobyclinic cat back systems, but don't know much about them at present.
Can anyone tell me also, is the Prodrive Sports Cat the same for the WRX and the STi?
I may invest in one of the Scoobyclinic cat back systems, but don't know much about them at present.
Can anyone tell me also, is the Prodrive Sports Cat the same for the WRX and the STi?
#13
I am probably going to go with the Prodrive sports cat and then some sort of 3/3.5" cat back system. I actually like the standard STi exhaust, it just needs to burble a bit more and perhaps a very slight increase in volume. As the car is a Spec D, I kind of want something more in keeping with the character of the car than something that's loud for the sake of it.
I may invest in one of the Scoobyclinic cat back systems, but don't know much about them at present.
Can anyone tell me also, is the Prodrive Sports Cat the same for the WRX and the STi?
I may invest in one of the Scoobyclinic cat back systems, but don't know much about them at present.
Can anyone tell me also, is the Prodrive Sports Cat the same for the WRX and the STi?
#14
Old thread I realise , but just after some clarification. I have a blobeye sti , noticed my back box blowing a little after my track day at oulton , I've found a prodrive backbox from a 2006 sti .. Should it be a straight fit ?
Thanks , Chris
Thanks , Chris
#15
#16
#17
Top man thanks :-)
I have a decat downpipe on a otherwise standard exhaust , shouldn't be too noisy should it ? Can't imagine it will be, but Ido like the fact that its quick but relatively quiet as it is..
I have a decat downpipe on a otherwise standard exhaust , shouldn't be too noisy should it ? Can't imagine it will be, but Ido like the fact that its quick but relatively quiet as it is..
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