Hi all, i need some help,

I recently purchased the 447 bhp scoobie from mr terminator and its a fantastic car no questions asked, the car is brilliant in ever way and i am so pleased,

The car is set up for 1.8 bar boost which it done well but today i noticed it was now boosting at 1.5 bar ? Why would i loose boost ?

Any ideas,

I have had a quick look over the vacuum hoses and couldn't find any problems so don't really know why ?

 

what sort of up pipe do you have as if it is a flex pipe may have a very small blow which could cause the turbo to lag slightly.

 

Outside temps have a factor if you can't find a leak. Don't know what it was like your way, but it was miserable and peeing down most of the day here. On a hot day you will not make boost as good as a cool day.

 

well its cold here and the up pipe is a harvey one, headers are ported and wraped also too.

Does any one know if the autronic ecu hold fault codes ?

 

Is your car fitted with 3-port boost solenoid?


Jura

 

Yer it is

 

Just taken car out, i reset the ecu and boost solonoid by disconnecting the battery, I ran it up and down the road and now it boosts at the 1.8 its suppose to, So either the boost solonoid is faulty and letting by or the Autronic may have been holding a fault, Do the autronic ecu holds faults,

Once i ran the car for about five or ten mins then it started to only boost at 1.5 again, were as before it was boosting at 1.8 and somtimes blip to 2.0 bar and return and hold at 1.8, Now it blips to 1.6/7 and then settles at 1.5 ?

Do reckon its the boost solonoid ?

 

It's a MAC 3 port boost solenoid bought from Harvey on here. Anyone got one or any views on it? Might be worth a pm to Harvey Pete?

TX.

 

Have look on this,someone have similar problem with Autronic and problem with holding boost(this guy have fitted 3-port Boost solenoid similar to MAC)

http://www.performanceforums.com/for...php?t=67206194

Second thing i would recommend sign up on Autronic forum

http://www.mrm-racing.se/forum/index.php


Jura

 

Well on ideal ive noticed the standard dump valve chatters, so i think it maybe letting by at high boost,

How can i test this ?

Thank you for all your help and advice

 

Bunged the standard dump valve, made no difference any further advice ?