supRo Posted May 10, 2005 Share Posted May 10, 2005 I have j spec 93 TT, 95K miles I had a FMIC and blue hoses installed....problems then began. Sympthoms: It started off with 2nd turbo not kicking in from 4th gear onwards, but if you drop gear, accelerate, it kicks in. When both turbos are on, they pull strongly. Now 1st and second gear sometimes don't get any boost or boost goes only to 0.5 bar. It's now better top end, both turbos come online more often, however there is now a 'judder' from the engine about 3100 rpm, 0.5 boost but not alway. It goes away after higher rpm. There is no blue smoke. The TTC mod made it slightly better but still had problems The obvious has been checked properly, twice. Hoses have been checked and in right places. Had the VSV valve thingies checked, actuator has been checked. The Boost pressure tank was replaced, made the problem 85% better but now it's gone back to how it was with the juddering Could it be the ceramic blades are damaged - Are the turbos the most likely culprit? Possible Turbo 1 is iify hence 2 doesn't want to play properly? I've been told reliably it can't be fuelling or spark plugs. Gonna have it on a dyno to see whats happening and probably have the turbos apart.... Any ideas to help with the diagnosis or if someone else has had similar probs? I believe this is quite an unusual problem? Link to comment Share on other sites More sharing options...
supRo Posted May 10, 2005 Author Share Posted May 10, 2005 I have been over 1.2 bar a few times as my restrictor ring is too big. If it helps: I've got Walbro pump FSE fuel regulator, HKS Iridium s40i sparkplugs(6 months old/9K miles) Full de-cat hks back box apexi induction kit Apexi AVCR boost controller (fitted after the problems) Greddy VSPL FMIC Always use optimax Link to comment Share on other sites More sharing options...
heckler Posted May 10, 2005 Share Posted May 10, 2005 Over fueling on the transition from no1 to no2??? Link to comment Share on other sites More sharing options...
eyefi Posted May 10, 2005 Share Posted May 10, 2005 dodgy actuator? sticky wastegate? Link to comment Share on other sites More sharing options...
supRo Posted May 10, 2005 Author Share Posted May 10, 2005 The car has definitely become more fuel thirsty since the prob. Got someone to drive behind me whilst I booted it, and checked whilst stationary - no blue smoke Link to comment Share on other sites More sharing options...
supRo Posted May 10, 2005 Author Share Posted May 10, 2005 Actuator was checked - can the wastegate be checked without removing anything? Forgot to mention there is some misfiring at higher revs. Since the boost controller was fitted (after the initial problems), some times I get power loss at top end 100mph+, almost like Fuel cut, not as violent, just for a split second. I do have a TRL FCD Link to comment Share on other sites More sharing options...
supRo Posted May 12, 2005 Author Share Posted May 12, 2005 Funnily enough, As from yesterday, the Turbos are coming online better than before! Whats going on?! Link to comment Share on other sites More sharing options...
absz Posted May 12, 2005 Share Posted May 12, 2005 want boost controller have you fitted ? and by whom Link to comment Share on other sites More sharing options...
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