Andrew Posted February 14, 2003 Share Posted February 14, 2003 How do you achieve over run? And is it save to do so? Is it a matter of simple tunning or are we talking high expense? Quote Link to comment Share on other sites More sharing options...
Adam W Posted February 14, 2003 Share Posted February 14, 2003 AFAIK over-run is just a term given to what the engine does as you lift off and brake into a corner. You achieve it by removing your rigth foot from the right-most pedal Not sure exactly what you mean here? Quote Link to comment Share on other sites More sharing options...
Andrew Posted February 14, 2003 Author Share Posted February 14, 2003 Sorry wrong term When you lift off you get the flames and poping. A Supra that does that, would have what done to it? Mod wise I guess I'm getting at. Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted February 14, 2003 Share Posted February 14, 2003 If it's done properly it will be because of the fuel over run shut down, on a programmable ECU. If it just all show & no go " MAX POWER STYLE" then it will just be a spark plug in the exhaust. Quote Link to comment Share on other sites More sharing options...
Wez Posted February 14, 2003 Share Posted February 14, 2003 This can naturally occur on highly tuned cars as unburnt fuel is ignited by the heat of the exhaust etc. This also happens when you are running antilag like on WRC cars but this is very bad for the turbos and is only supported by some aftermarket ECU`s. Hope this helps, Regards Wez PS you could always by a flamer kit which works off a switch under the throttle, just for looks though and offers no performance gain. Quote Link to comment Share on other sites More sharing options...
Andrew Posted February 14, 2003 Author Share Posted February 14, 2003 I'll give the flamer kit a miss So it's bad for Turbos then? Won't attempt it if it's going to shag the turbos. Out of interest how much would a programmable ECU set me back? Quote Link to comment Share on other sites More sharing options...
Wez Posted February 14, 2003 Share Posted February 14, 2003 Antilag is bad for the turbos yes Its ok for WRC teams who have alot of funding but for the average driver it can be costly, ok for track fun but does decrease the life of the turbo. I got a friend who runs antilag on a scooby, he gets mental launches due to boost being available at standstill but he doesn`t use it very often. For a decent programmable ECU you are looking upwards of 1000 quid. Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted February 14, 2003 Share Posted February 14, 2003 ALS is not too kind to turbo's. Fuel Over run is OK. Tough on exhausts though. A programmable ECU will cost between £3-10k to install & map. Quote Link to comment Share on other sites More sharing options...
Andrew Posted February 14, 2003 Author Share Posted February 14, 2003 I'll scrap that idea then, too costly Thanks for the info all. Quote Link to comment Share on other sites More sharing options...
Adam W Posted February 14, 2003 Share Posted February 14, 2003 I get pops, gurgles, crackles and bangs (and very occasional flames) because I run without cats or silencers, and I think I'm a bit rich in the midrange. Quote Link to comment Share on other sites More sharing options...
Andrew Posted February 14, 2003 Author Share Posted February 14, 2003 Funny you should say that, my MKIII (decat) poped and gurgled more than my MKIV (decat), I put it down to the MKIII being old, having lots of miles on the clock, and thought the fueling was slightly out. Over fueling maybe? I know your MKIII is highly modded Adam, do you have a programmable ECU too? Quote Link to comment Share on other sites More sharing options...
scooby_doo_do Posted February 14, 2003 Share Posted February 14, 2003 Just save yourself all the bother and get the flamer kit...... Great gun... and at £120...well.... Cheaper option to the ECU. :flame Dev http://www.chill-ville.co.uk/3.jpg Mine only works though when i'm off the accelerator whilst changing gear from 3rd gear onwards... It don't work in first and second.. Craig, Its always funny when you see the flames go higher than the rear of your spoiler when looking through the rear view mirror doing 90+. Quote Link to comment Share on other sites More sharing options...
Andrew Posted February 14, 2003 Author Share Posted February 14, 2003 Does it make a gurgle/pop crackle noise? Very important you see Quote Link to comment Share on other sites More sharing options...
scooby_doo_do Posted February 14, 2003 Share Posted February 14, 2003 Well, the exhaust rumbles when you let go of the accelerator, but i'm pretty sure they all do if they have no cats and a big ehaust.. Craig, Quote Link to comment Share on other sites More sharing options...
Andrew Posted February 14, 2003 Author Share Posted February 14, 2003 Yeah mine rumbles/gurgles, but I'm after a brutal pop/crackle, and of course some more power Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted February 14, 2003 Share Posted February 14, 2003 Just get a SAFC or similar & richen it up on part throttle, If you dump enough fuel into a hot exhaust you'll get your snap-crackle-pop. WHY do you want the car to do this. Mine shoots out 6ft flames & I hate it! Quote Link to comment Share on other sites More sharing options...
Andrew Posted February 14, 2003 Author Share Posted February 14, 2003 It's not so much the flame it's the noise. There's a Diablo and a TVR where I live that do this, makes all the hairs stand up on my neck when ever I hear them. The Diablo is insane, it pops and crackles on idle I'm one of those Supra owners that has the window open in sub zero temperatures just so I can hear the decat. I know I'm not the only one What'SAFC? Quote Link to comment Share on other sites More sharing options...
scooby_doo_do Posted February 14, 2003 Share Posted February 14, 2003 I like the flames every now and then in the dark, but i couldn't be doing with them all the time, Terry's right, that would be annoying.. Craig. Quote Link to comment Share on other sites More sharing options...
scooby_doo_do Posted February 14, 2003 Share Posted February 14, 2003 Not sure if it would make a difference or not, but my freind has a skyline, and has got cams installed, and then it sounds really rough at idle.. Makes a grumble off and on noise if that makes sense ? Craig. Quote Link to comment Share on other sites More sharing options...
Adam W Posted February 14, 2003 Share Posted February 14, 2003 Originally posted by Andrew Funny you should say that, my MKIII (decat) poped and gurgled more than my MKIV (decat), I put it down to the MKIII being old, having lots of miles on the clock, and thought the fueling was slightly out. Over fueling maybe? I know your MKIII is highly modded Adam, do you have a programmable ECU too? SAFC and big injectors at the moment, currently trying to decide between an E-manage and spending three times as much on an AEM ECU. It was ditching the backbox that made it sound mean though. Quote Link to comment Share on other sites More sharing options...
Wez Posted February 15, 2003 Share Posted February 15, 2003 I am also looking at the AEM at the moment, but it doesn`t really seem to be plug and play on the J-Spec Quote Link to comment Share on other sites More sharing options...
Thorin Posted February 15, 2003 Share Posted February 15, 2003 Originally posted by Wez I am also looking at the AEM at the moment, but it doesn`t really seem to be plug and play on the J-Spec I know Paul Whiffin spent a shed load of money getting the AEM mapped on his J-Spec. I should imagine he would have some base maps available for J-Spec's that should make things a lot easier than mapping it from scratch. You'll probably still be looking at a lot of money on mapping though. Anyone have any idea's as to how much? Thinking I'll go for the greddy emanage when I get hybrids. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted February 15, 2003 Share Posted February 15, 2003 Originally posted by Andrew Sorry wrong term When you lift off you get the flames and poping. A Supra that does that, would have what done to it? Mod wise I guess I'm getting at. Poping? Hmm, that's more smoke from chimneys, no flames as far as I know... Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted February 16, 2003 Share Posted February 16, 2003 I didn't spend a shed load of money mapping my AEM, I spent a shed load of time getting it all to work properly though, mainly because I was the first to install it on a J-spec so there were no base maps available, had to start from scratch. The E-manage will be far easier to set-up but then its never going to be as good as a mappable replacement ECU. Quote Link to comment Share on other sites More sharing options...
Wez Posted February 16, 2003 Share Posted February 16, 2003 Hey Paul, I have already spoken to you regarding the AEM, do you know where I could get the GM parts needed like the 3 Bar MAP and AIT sensor etc or would you also source these aswell. Regards Wez :flame Dev Quote Link to comment Share on other sites More sharing options...
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