portland2002
Full member
anybody know what a seat leon cupra r 225 bam engine 2004 should boost to? my turbo was rebuilt with with a bigger compressor wheel and machined housing anyway. the issue is it boosts to 1.5 bar upto 3700 rpm then drops to 1.1 bar on the dyno it looks like a hacksaw blade up and down it sort of flatlines in stead of carrying on to about 5700 rpm then droping off the curve stops at 3700 rpm and holds 1.1 bar past 3700 rpm i would think the boost would drop off later up the rev range or am i wrong?. i changed the n75 no change the went for a j type n75 holds a bit longer still the same.fitted a adjustable forge actuator with a 24 psi spring no change and a forge 008 dump valve no change. there are no leaks tested that and all pipe are reinforced silicone !!!! help!!!!
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