paulj1 Posted February 27, 2013 Share Posted February 27, 2013 Hi guys a friend has just bought a VVTI TT Manual and wants to fit a HKS dump valve but it has a MAF how you guys get around this without sending ecu a little nutty? Cheers paul Quote Link to comment Share on other sites More sharing options...
SPG Posted February 27, 2013 Share Posted February 27, 2013 Its not advisable to be running a Dump Valve with the VVTi engine buddy, tell your friend to record an episode of Thomas the Tank Engine and play it back through the car audio. Quote Link to comment Share on other sites More sharing options...
Westy Posted February 27, 2013 Share Posted February 27, 2013 Recirculate it! Tell him just to stick with the stock BOV Quote Link to comment Share on other sites More sharing options...
paulj1 Posted February 27, 2013 Author Share Posted February 27, 2013 Okey coke guys thanks he'll just have to get a lift in mine to hear it lol Quote Link to comment Share on other sites More sharing options...
Westy Posted February 27, 2013 Share Posted February 27, 2013 He will hear it fine...I have the stock BOV and HKS intake...it's loud enough! Quote Link to comment Share on other sites More sharing options...
paulj1 Posted February 27, 2013 Author Share Posted February 27, 2013 Brilliant Westy I'll let him know as at the moment it is stock apart from an alloy rad Quote Link to comment Share on other sites More sharing options...
Calzo21 Posted February 27, 2013 Share Posted February 27, 2013 What's meant to happen with a VVTi and BOV ?? :o Iv got one on mine and it's been alright Quote Link to comment Share on other sites More sharing options...
Westy Posted February 27, 2013 Share Posted February 27, 2013 What's meant to happen with a VVTi and BOV ?? :o Iv got one on mine and it's been alright Throws of the MAF mate...AFRs will be all over the place and it will over fuel itself if the BOV is vent to atmosphere. Quote Link to comment Share on other sites More sharing options...
Calzo21 Posted February 27, 2013 Share Posted February 27, 2013 Oh Christ I had no idea, I mean it's ran just as well as before How do you vent to atmosphere I'm not sure if it's recirculating or atmospheric Quote Link to comment Share on other sites More sharing options...
SPG Posted February 27, 2013 Share Posted February 27, 2013 If you are dumping pressure into the air then its atmospheric, if you are recirculating then no air should be dumped and a small chirp should be heard, unlike a whooosh off the dump valve Quote Link to comment Share on other sites More sharing options...
Calzo21 Posted February 27, 2013 Share Posted February 27, 2013 If you are dumping pressure into the air then its atmospheric, if you are recirculating then no air should be dumped and a small chirp should be heard, unlike a whooosh off the dump valve Yeah I'm atmospheric I get a whoosh But being auto does that change it ? It very rarely whooshes, only if I lift off the pedal from turbos going Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted February 27, 2013 Share Posted February 27, 2013 What's meant to happen with a VVTi and BOV ?? :o Iv got one on mine and it's been alright A MAF measures the air coming through the intake, then tells the ECU how much fuel to put into the engine. When a large amount of that air gets dumped overboard in order to make crap noises, the ECU still think X air is present and adds that amount of fuel, when in fact Y air is present and the engine over fuels. Quote Link to comment Share on other sites More sharing options...
Calzo21 Posted February 27, 2013 Share Posted February 27, 2013 A MAF measures the air coming through the intake, then tells the ECU how much fuel to put into the engine. When a large amount of that air gets dumped overboard in order to make crap noises, the ECU still think X air is present and adds that amount of fuel, when in fact Y air is present and the engine over fuels. Ahhhh thanks for quick explanation Is there any signs to tell if it's running lean or is it like chlamydia can't tell haha Quote Link to comment Share on other sites More sharing options...
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