Lucifer Posted March 3, 2005 Share Posted March 3, 2005 Ok Im not too articulate, but ill try! TT - Auto - In manual mode 2nd gear (gear doesn not matter though) 10 mph (for example) foot to the floor, pulls as it should up to 4k b4 2nd turbo is online. Now, if I back off before teh 2nd turbo comes online, it feels like I get massive fuel cut! Although not that harsh. It feels more like a miss fire. If I back off all the way its fine, but if I back off to 10%-80% it coughs hard. Now.... If I do this when the 2nd turbo is online (after 4k) it does not do it! Things that might effect it ive done: HKS Iridiums, 12k on them, cleaned every 3, Gap .0028 12v Fuel pump Mod HKS power induction Anyone any ideas???? M-Jay Link to comment Share on other sites More sharing options...
tbourner Posted March 3, 2005 Share Posted March 3, 2005 Mine jolts slightly if I lift off just as the second turbo is about to spool, I put it down to confusing the VSVs by opening then closing them very quickly. Link to comment Share on other sites More sharing options...
Lucifer Posted March 3, 2005 Author Share Posted March 3, 2005 No, this happens between 2000 and 4000 rpm... any ideas anyone? Link to comment Share on other sites More sharing options...
Guest slow dog Posted March 3, 2005 Share Posted March 3, 2005 sounds like a fuel pump problem Link to comment Share on other sites More sharing options...
Lucifer Posted March 3, 2005 Author Share Posted March 3, 2005 sounds like a fuel pump problem I have a dual Walbro setup. What do you think could be wrong? Link to comment Share on other sites More sharing options...
Guest slow dog Posted March 3, 2005 Share Posted March 3, 2005 do you have an fse ?????????????? Link to comment Share on other sites More sharing options...
Lucifer Posted March 3, 2005 Author Share Posted March 3, 2005 No I was looking into that to see which one to get. The Sard one looks good with gauage. Link to comment Share on other sites More sharing options...
Alex Posted March 3, 2005 Share Posted March 3, 2005 12v fuel pump mod...making you go rich at lift off....at higher revs it won't be an issue cause the fuel gets burnt off much faster. The 12v fuel pump mod isn't required - the fuel pumps switch to 12v's anyway as soon as the system gets positive boost AFAIK. Link to comment Share on other sites More sharing options...
Lucifer Posted March 3, 2005 Author Share Posted March 3, 2005 12v fuel pump mod...making you go rich at lift off....at higher revs it won't be an issue cause the fuel gets burnt off much faster. The 12v fuel pump mod isn't required - the fuel pumps switch to 12v's anyway as soon as the system gets positive boost AFAIK. I was under the impression it went to 12v when No2 comes online.... Link to comment Share on other sites More sharing options...
Barry Posted March 3, 2005 Share Posted March 3, 2005 I was under the impression it went to 12v when No2 comes online.... No, as Alex says, any positive boost will switch to 12v. Link to comment Share on other sites More sharing options...
Lucifer Posted March 3, 2005 Author Share Posted March 3, 2005 No, as Alex says, any positive boost will switch to 12v. Ah ok, then ill change that, untill I get the AEM in. Link to comment Share on other sites More sharing options...
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