PPP backbox
13 May 2002, 07:29 AM
#2
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Yup.
It's a little quieter on a decatted system than the WRsport oval box but it still makes for a good noise under power
I also prefer the round pipe, which is why I got one and sold my WR. 
Performance wise, no idea.
You can pick them up occasionally in For Sale for about £150 - £200 depending on age/condition.
It's a little quieter on a decatted system than the WRsport oval box but it still makes for a good noise under power
I also prefer the round pipe, which is why I got one and sold my WR. Performance wise, no idea.
You can pick them up occasionally in For Sale for about £150 - £200 depending on age/condition.
13 May 2002, 03:29 PM
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It is way better than standard, but makes a whoosing sound (some say like an F15 
) under high load which is the hallmark of a restrictive exhaust. I quite like the sound, and it does come alive when you boot it. I am running quite a lot of airflow, so on my car it probably is restricting it more than some others. However, it makes a decat system on my car quieter than many cars with just a backbox, so overall I gain for my tolerated noise level - otherwise I might need to put the OEM downpipe back on and that is a truly evil creation like the original uppipe which is simply horrendous.
) under high load which is the hallmark of a restrictive exhaust. I quite like the sound, and it does come alive when you boot it. I am running quite a lot of airflow, so on my car it probably is restricting it more than some others. However, it makes a decat system on my car quieter than many cars with just a backbox, so overall I gain for my tolerated noise level - otherwise I might need to put the OEM downpipe back on and that is a truly evil creation like the original uppipe which is simply horrendous.
13 May 2002, 08:05 PM
#7
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A dealer won't sell you a round one as they only come as part of the PPP. The oval WR jobber is the only one you can officially get through a dealer.
Like I said, keep an eye on the For Sale section: that's where I got mine from.
Like I said, keep an eye on the For Sale section: that's where I got mine from.
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14 May 2002, 06:38 PM
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I think I'd go as far as saying there's no actual extra power (as in peak), but what there is (or rather was) is there for longer - the 'power band' is wider so overall you get more go out of it.
I'm obviously having one of my not-so-clear days, so I think I'll get my coat...
I'm obviously having one of my not-so-clear days, so I think I'll get my coat...
16 May 2002, 12:43 PM
#12
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Look at this power run.
The PPP kit also includes a modified STi ECU, and an ST15/P1 decatted centre section and Intercooler piping, as well as the back box you fancy.
The run shows a car with out the ECU but the mechanical bits in place.
http://dyno.scoobynet.co.uk/uk/jason_jarvis.htm
Cheers MTR
[Edited by MTR - 5/16/2002 12:44:39 PM]
The PPP kit also includes a modified STi ECU, and an ST15/P1 decatted centre section and Intercooler piping, as well as the back box you fancy.
The run shows a car with out the ECU but the mechanical bits in place.
http://dyno.scoobynet.co.uk/uk/jason_jarvis.htm
Cheers MTR
[Edited by MTR - 5/16/2002 12:44:39 PM]
17 May 2002, 08:43 AM
#13
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IMHO, you'll only notice backbox restriction differences once you've decatted the downpipe....only then does it become the biggest restriction (I can't tell the difference between a catted centre and resonated centre on my car).
Richard
Richard
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