jsnlvxr Posted February 28, 2016 Share Posted February 28, 2016 Hi guys. I've had the supe converted from na auto to tt auto with bpu. I it's running a mines ecu, and hybrids but no boost controller yet so at 0.9 bar. When you give it some stick on a open road just before it changes gear there's a big bang through the exhaust and the car dips quite alot.doesnt feel right that's for sure. Any ideas what this could be? Quote Link to comment Share on other sites More sharing options...
np89 Posted February 28, 2016 Share Posted February 28, 2016 Sounds like a misfire. The auto ecu pulls timing just before the gear change. Could be a bad ignition as a result. Do you have an safc or anything else on the go? Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted February 28, 2016 Share Posted February 28, 2016 When changing gear they do make a sound from a fart to a full blown machine gun depending on your exhaust, the ECU pulls the timing when changing gear I believe. Never heard a big bang before though. Quote Link to comment Share on other sites More sharing options...
David P Posted February 28, 2016 Share Posted February 28, 2016 Maybe needs a boost controller? Quote Link to comment Share on other sites More sharing options...
Dnk Posted February 28, 2016 Share Posted February 28, 2016 Never had any bangs on my auto even when the t/p was buried in the carpet What's it boosting too ? you have a boost gauge ? A boost controller would be a wise thing to fit then go from there Quote Link to comment Share on other sites More sharing options...
np89 Posted February 28, 2016 Share Posted February 28, 2016 Never had any bangs on my auto even when the t/p was buried in the carpet What's it boosting too ? you have a boost gauge ? Yea could be a boost spike. Is .9 bar the factory level for boost cut? No fcd? Quote Link to comment Share on other sites More sharing options...
jsnlvxr Posted February 28, 2016 Author Share Posted February 28, 2016 I think I will get a boost controller sorted. I havnt got a fcd fitted as I thought the mines ecu had one built in. It boost to abiut 14psi on the gauge,pulls fine all the way then just bangs as it cuts to change gear - - - Updated - - - I think I will get a boost controller sorted. I havnt got a fcd fitted as I thought the mines ecu had one built in. It boost to abiut 14psi on the gauge,pulls fine all the way then just bangs as it cuts to change gear Quote Link to comment Share on other sites More sharing options...
Ric Posted February 28, 2016 Share Posted February 28, 2016 It sounds like fuel cut. more than 1 bar for 3 seconds cuts the power. Can feel violent enough. You'd think the Mines ECU would take that out though, it's a standard feature for them. Quote Link to comment Share on other sites More sharing options...
drift_bear Posted February 28, 2016 Share Posted February 28, 2016 That sounds like fuel cut (as said above) Quote Link to comment Share on other sites More sharing options...
jsnlvxr Posted February 28, 2016 Author Share Posted February 28, 2016 OK il check that out. I have got a standard spare ecu and a fcd I could try Quote Link to comment Share on other sites More sharing options...
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