wallis Posted March 8, 2011 Share Posted March 8, 2011 Hey up fellas, With this better weather and dry roads I've been on a few spirited drives and my car when floored between gears is banging like all I can describe is a rally car from the exhaust, usually about 5 to 6 really quick like it's on the rev limiter, untill it finds the next gear. Afr's are good and egt's fine, it honestly sounds awesome but scares the fooke out of people and other drivers. I guess my question is, is this normal and ok? I get the same also if I leave the traction control on and boot it, if it starts spinning the wheels and the powers cut it also bangs...... Lol Any feedback would be great ;-) Quote Link to comment Share on other sites More sharing options...
JamieP Posted March 8, 2011 Share Posted March 8, 2011 Thats not right, it should only ever pop/bang if it hits the rev limiter. Quote Link to comment Share on other sites More sharing options...
Bailey. Posted March 8, 2011 Share Posted March 8, 2011 I would speak to Dude mate Quote Link to comment Share on other sites More sharing options...
Rob_Mitchell Posted March 8, 2011 Share Posted March 8, 2011 sounds wrong mate, see what dude thinks. Quote Link to comment Share on other sites More sharing options...
dude Posted March 8, 2011 Share Posted March 8, 2011 Have you got RLTC Matt ???? or is the mysterious missfire returning????? Quote Link to comment Share on other sites More sharing options...
wallis Posted March 8, 2011 Author Share Posted March 8, 2011 I will call matt or dude tommorrow then, cheers for the quick feed back guys! Quote Link to comment Share on other sites More sharing options...
Ricky49 Posted March 8, 2011 Share Posted March 8, 2011 My pops and bangs but only when the traction control is on. Quote Link to comment Share on other sites More sharing options...
wallis Posted March 8, 2011 Author Share Posted March 8, 2011 Have you got RLTC Matt ???? or is the mysterious missfire returning????? no dude not got rltc, it's just the stock one mate. I suppose u could call it a misfire but only between the auto gear changes, it's kinda like the engine bounces of the rev limiter between gear changes kinda thing? I've Only driven the car the last few days foot to the floor stylee, so never been able to drive it proper until now I guess. I will call u tommorrow dude ;-) Quote Link to comment Share on other sites More sharing options...
dude Posted March 8, 2011 Share Posted March 8, 2011 Is it changing gear quickly or labouring ie hitting rev limit before it hits the next gear, in other words have you bolloxed the box already ????? Quote Link to comment Share on other sites More sharing options...
wallis Posted March 8, 2011 Author Share Posted March 8, 2011 My pops and bangs but only when the traction control is on. Right ok so I'm guessing this is normal with tc on then. Quote Link to comment Share on other sites More sharing options...
wallis Posted March 8, 2011 Author Share Posted March 8, 2011 Is it changing gear quickly or labouring ie hitting rev limit before it hits the next gear, in other words have you bolloxed the box already ????? It drives brill, gear box has never been better since the new Oil and filter change dude. Quote Link to comment Share on other sites More sharing options...
dude Posted March 8, 2011 Share Posted March 8, 2011 Turn it off and find out !!!!! Quote Link to comment Share on other sites More sharing options...
wallis Posted March 8, 2011 Author Share Posted March 8, 2011 Tonight when I was driving it the tc was 100% off in normal auto drive mode and it was popping between 2nd and third gear changes. If u have it in Manu mode through the gears it always pops and bangs of the limiter untill u change up a gear, my supras always done that just not ever in normal auto mode? Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted March 8, 2011 Share Posted March 8, 2011 I know exactly what you mean mate, like a machine gun fire at max revs before the change? Its the ECU cutting the igniton before the gear changes, my Soarer used to do it as well. Quote Link to comment Share on other sites More sharing options...
J_Supra_07 Posted March 9, 2011 Share Posted March 9, 2011 Sounds to me like your box is not changing up in time. If the hitting the limiter before it changes it will bang Quote Link to comment Share on other sites More sharing options...
wallis Posted March 9, 2011 Author Share Posted March 9, 2011 I know exactly what you mean mate, like a machine gun fire at max revs before the change? Its the ECU cutting the igniton before the gear changes, my Soarer used to do it as well. Yeah exactly that Craig, I'm going to speak to afr today see what they think. Craig u got a spare ignitor pack i could borrow, I want to change it to see if that stops it ;-) Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted March 9, 2011 Share Posted March 9, 2011 Its not the ignitor mate its the ECU, but yeah when Johnmkiv sends it back to me youre welcome to it Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted March 9, 2011 Share Posted March 9, 2011 Sounds to me like your box is not changing up in time. If the hitting the limiter before it changes it will bang No, the ECU cuts the ignition or pulls the timing before it changes the gear to soften the change. Quote Link to comment Share on other sites More sharing options...
dude Posted March 9, 2011 Share Posted March 9, 2011 Its already had ignitor pack Matt, which is why Matt thinks the actual metal conector in the plug could be the problem, hence when you change packs the plugs have been disturbed and thus the missfire goes, try jiggling the plug or trying more contact cleaner. Quote Link to comment Share on other sites More sharing options...
SaqTRD Posted March 9, 2011 Share Posted March 9, 2011 What ECU Are you running? Quote Link to comment Share on other sites More sharing options...
Ryan.G Posted March 9, 2011 Share Posted March 9, 2011 Its the Standard ecu reducing the torque on gearchanges. You get the banging on your car because of the large injectors and running a piggyback. Basically when you get to the point where the box changes the stock ecu creates torque reduction by pulling timing and closing the ETTC valve about half way, when doing this with large injectors that i find are larger than 650cc the amount of fuel that is injected into the engine is twice as much as toyota mapped it for gearchanges. Lots of fuel, retarded ignition, oxygen and an exhaust which is around 400c creates basically a flame thrower. Only way you can try and get round it is look at the cell it sits in when it happens and pull fuel out. Or Fit a Syvecs which monitors the ETTC valve and retards the timing it self so cuts the right amount of fuel Quote Link to comment Share on other sites More sharing options...
dude Posted March 9, 2011 Share Posted March 9, 2011 There you go Matt I did tell you to fit a man size turbo and decent ecu !!!!!!! Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted March 9, 2011 Share Posted March 9, 2011 I can't see explosions in the manifold / exhaust doing the turbo or exhaust system any favours. The rally boys use mega expensive units that are changed more often then their socks. Quote Link to comment Share on other sites More sharing options...
wallis Posted March 9, 2011 Author Share Posted March 9, 2011 Cheers for all the feedback fellas, I'm going to change a vac pipe and clean and sort out the pins on the ign pack to see if this sorts it. It's intermittent so it's prob just a bad connection on the pins hopefully. The cars run fine with the fic before when afr test drove it, so the mapping and set up is fine. Fingers crossed I'll sort it out this weekend! Thx again guys for the advise :-) Quote Link to comment Share on other sites More sharing options...
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