Maintain, Modify and DRIVE your GT-Four

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 Post subject: Boost cut limits.
PostPosted: Mon Aug 18, 2014 1:02 pm 
Junior WRC

Joined: Fri Jan 29, 2010 10:39 pm
Posts: 514
Location: Bournemouth
Car Model: ST205
Does anybody know if there are varying levels of boost cut dependant on loading in stock ecu.
I'm aware there are RPM dependant ones (or is that the same thing??)

St205 WRC - Running sweet.

 Post subject: Re: Boost cut limits.
PostPosted: Tue Aug 19, 2014 3:21 pm 
Club Staff
User avatar

Joined: Wed Jul 13, 2005 12:06 am
Posts: 4742
Location: Perth, Western Australia
Car Model: ST205
The only time I've ever experienced boost cut was during a hot track day in my standard UK ST205. The car went into some sort of 'safe' mode which left enough power to get back to the pits. After it had cooled down it started and ran fine. I always assumed this was triggered by either the high plenum temps and/or a boost spike. I'm sure my 6,200rpm gear change would not have been seen as abnormal by the ECU.

GT4DC Chairman
1994 Toyota Celica GT-Four ST205WRC JDM 269bhp @ 0.9bar
1994 Toyota Celica GT-Four Special GT 590bhp @ 1.8bar
1989 Van Diemen RF88/89 Formula Ford 1600
2012 Van Diemen JL12 Formula Ford 1600
2008 Nissan Patrol GU 3.0L ZD30DDTi 154bhp

 Post subject: Re: Boost cut limits.
PostPosted: Tue Aug 26, 2014 8:39 pm 

Joined: Sun Aug 25, 2013 2:54 pm
Posts: 120
Car Model: None
I managed to hit boost cut the other day accelerating in 3rd gear, my boost controller only logged a peak of 1.22 bar where as when I was setting it up I hit 1.3 a couple tes and nothing happened. I presume this is because I kept the boost up for longer this time.

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