[Mk2] [Turbo] Wont hold full boost?

[eddo]

Hey, im forcing 1 bar through my mr2 rev 3 engine, and it peaks at just above a bar but slowly drops down on wide open throttle. im running a stock rev 2 dump valve venting to atmosphere and using a ball and spring type manual boost controller.

any ideas how to make it hold boost?

cheers

[2barGee]

EBC will help mate with the boost!

Doesn't your dump valve sound like a bus I'd get a propper one as well if your venting it to atmos

[eddo]

hi mate, so ebc is the computer type controller with a solenoid? Yeah the stock valve wont sound as good as a proper dumper but im not bothered about the noise so id only shell out for a decent one to help hold the boost.

so im guessing its a mixture of a poor dumpvalve and boost controller causing me the problems?

cant really afford to spend anything atm so il try switching to my mates bleed valve see if thats any better?

[Razor04]

Check for boost leaks around the intercooler to throttle body pipe, this is quite common and usually just needs a tighten of the jubilees or fit some uprated mikalor clamps.

[eddo]

hi mate, how do i check for leaks?

[GTS GAV]

i use water and a bit of washing up liquid dont ster the washing liguid in the water to much to make it throthy, run it around joints on the charge pipes etc and look for bubbles to appear giv it a sligh rev to help also, hope this helps its crued but affective way but it works for me everytime on mates cars....