Boost spiking on MY00?
20 February 2003, 10:07 AM
#1
Scooby Regular
Thread Starter
Join Date: Jul 2002
Location: Warwick
Posts: 733
Likes: 0
Received 0 Likes
on
0 Posts
Ok, I know this sort of thing comes up frequently, but I'm still curious to know if others get it.
Basically, on a cold day, in 5th at about 3500rpm (so peak torque), it cruises just below positive turbo pressure. If I floor it (gently or suddenly), then the pressure goes up to +20psi (on a really cold day), then back to around +12psi, then settles to around +15 to +17.5psi.
Can anything be done about this? I know that on the old WRXs and STis, the grommet in the turbo pipe connection to the ECU monitoring could be changed.
Has anyone come across this in a MY00 PPP? No other changes except air filter, so original down pipe.
Cheers
Richard
Basically, on a cold day, in 5th at about 3500rpm (so peak torque), it cruises just below positive turbo pressure. If I floor it (gently or suddenly), then the pressure goes up to +20psi (on a really cold day), then back to around +12psi, then settles to around +15 to +17.5psi.
Can anything be done about this? I know that on the old WRXs and STis, the grommet in the turbo pipe connection to the ECU monitoring could be changed.
Has anyone come across this in a MY00 PPP? No other changes except air filter, so original down pipe.
Cheers
Richard
20 February 2003, 10:34 AM
#2
Scooby Regular
iTrader: (1)
Join Date: Dec 2000
Location: Herts.
Posts: 1,727
Likes: 0
Received 0 Likes
on
0 Posts
I think it is well observed that PPP ECU does not do a brilliant job of controlling boost. Have seen previous posts going through the techie details - sure someone will post more info soon......
20 February 2003, 03:28 PM
#4
Scooby Regular
Join Date: Nov 2000
Location: 32 cylinders and many cats
Posts: 18,658
Likes: 0
Received 1 Like
on
1 Post
Richard if cleaning the restrictor and solenoid with brake cleaner and confirming the oil level is not too high doesn't work, then an adjustable restrictor valve works a treat. I previously posted a mammoth thread on this about a year ago, and following that this guy from a pneumatics shop in Glenrothes sold dozens of them 
20 February 2003, 04:43 PM
#5
Scooby Regular
Thread Starter
Join Date: Jul 2002
Location: Warwick
Posts: 733
Likes: 0
Received 0 Likes
on
0 Posts
Good ideas John, thanks! I'll give that a try (the cleaning bit first 
) and dig out your old thread.Hi Mikey,
Yep, still in Germany, and we've just signed a development deal with Ferrari. I'm off to Maranello tomorrow to meet the guys, then off to Estoril for a photo-shoot next week and hopefully meet the drivers too
Cheers
Richard
Trending Topics
21 February 2003, 11:28 AM
#10
Scooby Regular
Join Date: Jan 2001
Location: http://www.facebook.com
Posts: 15,233
Likes: 0
Received 0 Likes
on
0 Posts
Jammy sod,
Say hello to Mikey (Schumacher) for me, we go way back oh yeah, I could tell you a few stories like the time we......(Gets his coat and walks backwards to the door
)
Have a good one
Mikey
Say hello to Mikey (Schumacher) for me, we go way back oh yeah, I could tell you a few stories like the time we......(Gets his coat and walks backwards to the door
)Have a good one
Mikey
Thread
Thread Starter
Forum
Replies
Last Post
Mattybr5@MB Developments
Full Cars Breaking For Spares
12
18 November 2015 07:03 AM