Right i seem to be having a fluctuance in boost. Some times it will boost to 16 psi and sometimes it can only see 10psi. Can anybody shed anylight on a potential problem. The readings are being taken from an aftermarket boost gauge. Ive checked all hoses and they are all fine.
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Thread: boost problem
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Monday 24th August 2015, 16:06 #1Senior Member
old skool rules
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Thanked 114 Times in 87 Postsboost problem
2.5" custom built exhaust system with decat (bcs automotive). Rip kit. Custom built cold air feed with itg filter. Black diamond discs with ferodo ds2000 pads. Black edition polybushed wishbones & top engine mount. Polybushed subframe mounts and lower engine mount. Adjustable front camber bolts. Strut brace. Custom made brock alloy wheels. H&r lowering springs. Mbc. Hlm 304map. 52mm boost gauge with orange needle and black back to match original dials. Tomcat r spolier built into bumper.
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Monday 24th August 2015, 16:20 #2Senior Member
228k and still not broke it!
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Thanked 7,752 Times in 5,648 PostsTry it without the mbc attached, see if it's stable then.
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twr (Monday 24th August 2015)
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Monday 24th August 2015, 20:01 #3Ghost Rider
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Thanked 1,921 Times in 1,186 PostsSticky wastegate ?
1996 850 T5 AWD - Self tuned M4.4 ECU with COP`s, B5254T ( S60R internals in a 850 block ) ostrich 2.0 , VXR injectors @ 3.8 bar, K24 turbo with a 6+6 compressor wheel, 3.25" MAF, top mounted Dump Valve, RN Exhaust manifold, 3" downpipe with 200 cell cat, 2.75" Stainless exhaust, Brembo calipers, S60R brake discs, stainless RIP kit, 3" Throttle body,
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twr (Monday 24th August 2015)
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Monday 24th August 2015, 20:34 #4Senior Member
OH DEAR
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Thanked 3,711 Times in 2,752 PostsI too would start off removing the mbc as the 304ap should see you at 15-16psi and see what results you get with that alone
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twr (Monday 24th August 2015)
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