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Discussion Starter #1
ok time to rattle a few minds? right why would my base boost be so low . since ive had my car ive ajusted the bar in 3 turns
not much differnt so i got a gauge a further 2 tuns in to get a 0.45 base so how did it get so low
 

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1.Weak spring due to age?

2.Removed the cat or leaking exhaust?

3.Changed the down pipe for a freer flowing one?

4.Just miss adjusted at some time

Anything that lowered pressure in the exhaust will lower the base boost (greater pressure differential over the wastegate).

The wastegate spring will weaken with age.

BB 2.3T (inc aero auto) = 0.37 - 0.43
BB Aero = 0.42 - 0.48
BB 2.3lpt = 0.37 - 0.43

Andrew
 

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Discussion Starter #3
thanks scaero
next on my list is a new actuator. since iam planing to go to stage 2 would it be wise to get a actuartor with a 0.6 spring or 0.5
 

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 3.Changed the down pipe for a freer flowing one?
2.Removed the cat or leaking exhaust?
 [/b]
So having done both - fitted a JT 3" sans cat last year - I really ought to be checking my base boost since modifications?

Mike
 

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Thanks Mark - looks like a boost gauge from Elk then and presumably easiest/best way is to disable APC rather than brake and press the fast pedal at some time?

Mike
 

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You only have to apply very light pressure to the brake pedal to disengage the APC, possibly not even enough to activate the brakes.

Failing that the other easy way is to pull the APC fuse, if there is one, possibly #24.

HTH
 
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