reececrabb Posted August 30, 2018 Report Share Posted August 30, 2018 I come across a video on YouTube last night of a 1.0l Lupo spitting flames and was wondering how the **** that was possible in a one litre car and the thing was popping and banging like mad was wondering if it was just a tune with a decat or something I’m missing out on Quote Link to comment Share on other sites More sharing options...
Sausage Posted August 30, 2018 Report Share Posted August 30, 2018 Link? Quote Link to comment Share on other sites More sharing options...
Pete Posted August 30, 2018 Report Share Posted August 30, 2018 You can do it with any petrol car, just rag the tits off it, turn it off and then back on again quickly after, the fuel being dumped into the engine at full revs ignites when the engine is turned back on and it fires it through the exhaust system. It helps to have a straight through though. And to be a bit retarded. Quote Link to comment Share on other sites More sharing options...
Rich Posted August 30, 2018 Report Share Posted August 30, 2018 Once at a show someone had a single spark plug at the back of the exhaust wired up to a coil on a switch. I was waiting for the boom. Quote Link to comment Share on other sites More sharing options...
mk2 Posted August 31, 2018 Report Share Posted August 31, 2018 10 hours ago, Pete said: You can do it with any petrol car, just rag the tits off it, turn it off and then back on again quickly after, the fuel being dumped into the engine at full revs ignites when the engine is turned back on and it fires it through the exhaust system. It helps to have a straight through though. And to be a bit retarded. You can't if the car is a modern fuel injected thing, controlled by a bosch ECU, with a cat. As a safety measure, the moment the ECU is switched off, all the injectors (and carbon canister purge solenoid) and fuel pump are shut off. If raw fuel went into a cat it just gets converted. Pete's right though- if you had a straight though exhaust and a software modded ECU you could program it to inject fuel without any ignition pulses. No flames though, just a big bang. To get visible flames (yellow), you need to run a mix of about 4:1 air:fuel. But you need to ignite it first, and 4:1 wont ignite with a spark plug. It's actually much more difficult than you think. A flame thrower concept might be easier........ (huge injector in the tailpipe). not that I know anything about this! Quote Link to comment Share on other sites More sharing options...
reececrabb Posted August 31, 2018 Author Report Share Posted August 31, 2018 11 hours ago, Sausage said: Link? Quote Link to comment Share on other sites More sharing options...
Pete Posted August 31, 2018 Report Share Posted August 31, 2018 It even says in the comments how he did it...🤷♂️ Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.