P2P01 New Member 11 Member For: 7y 19d Posted 14/01/18 03:28 AM Share Posted 14/01/18 03:28 AM Hi Guys, Being new to this site I was hoping this would be something that some of you guys have come across as I'm at a bit of a deadend with this issue. I have a 2012 fg xr6 turbo ute, Love the car. I'm chasing around 350kw at the wheels. Now its manual with 95,000ks. It went in for a stage 1 power upgrade a a very well established and known workshop (guys were great there) that I wont say where. it was put on the dyno with only about 215 kw at the wheels. They said its below standard! on went a venom cat and 1000cc injectors and tune. Result... about 240kw at the wheels. I was shocked. They checked alot of things ie cracked pipes, exhaust and so on. No result. The car drives somewhat sluggish and im getting fullboost (16psi) around 4200rpm. Also it never breaks traction. Has anyone come across this before? Please help as Im unsure whether to keep going with this car or sell up. Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,187 Member For: 16y 9m 23d Gender: Male Location: Melbourne Posted 14/01/18 03:59 AM Share Posted 14/01/18 03:59 AM 215 is below standard. They come with about 220-240 standard. But it's not a problem to be a bit below standard as it may have been a "Friday" build. The stock fuel system in the Ute might be holding it back... But 16psi is wayyyyyyyyyyyy too much boost for that much power. I'd be checking for a vacuum leak, first of all. Then check the coils and plugs. Link to comment Share on other sites More sharing options...
P2P01 New Member 11 Member For: 7y 19d Posted 14/01/18 04:39 AM Author Share Posted 14/01/18 04:39 AM I'm guessing if it was electrical I'd feel it as I've had split coils before and that's easy to spot. However the vacuum might be a goer. my boost gauge doesn't show ANY vacuum at all!! How do I check for a leak though? Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,187 Member For: 16y 9m 23d Gender: Male Location: Melbourne Posted 14/01/18 04:44 AM Share Posted 14/01/18 04:44 AM Spray soapy water around the intake manifold and connections off it, start the car and check for bubbles.. Thats one simple way. Link to comment Share on other sites More sharing options...
Puffwagon Trust me bro...tbh ;) 8===} Gold Donating Members 16,085 Member For: 10y 4d Gender: Male Location: South Australia Posted 14/01/18 04:50 AM Share Posted 14/01/18 04:50 AM 3 minutes ago, k31th said: Spray soapy water around the intake manifold and connections off it, start the car and check for bubbles.. that's one simple way. Dude a vacuum leak sucks air in, not blows it out. Use ether in a can to find vacuum leaks. Spray it around gaskets and connections etc and if the idle increases then you know there is a leak there. Link to comment Share on other sites More sharing options...
Rab WOT? Moderating Team 10,981 Member For: 11y 11m 8d Gender: Male Location: Frankston, 3199 Posted 14/01/18 04:54 AM Share Posted 14/01/18 04:54 AM WD40 work too? Link to comment Share on other sites More sharing options...
Puffwagon Trust me bro...tbh ;) 8===} Gold Donating Members 16,085 Member For: 10y 4d Gender: Male Location: South Australia Posted 14/01/18 04:57 AM Share Posted 14/01/18 04:57 AM (edited) Not really, it's not very flammable. Edit: Removed link cos it was good for sfa Edited 14/01/18 05:04 AM by Puffwagon Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,187 Member For: 16y 9m 23d Gender: Male Location: Melbourne Posted 14/01/18 05:03 AM Share Posted 14/01/18 05:03 AM 9 minutes ago, Puffwagon said: vacuum leaks air in, not blows it out. Works fine as a bit of throttle movement changes the vacuum pressure and of that extra air pressure on top of idle vacuum, it can leak out the same areas you said to check. It's not perfect, it will do the job. Link to comment Share on other sites More sharing options...
BAXRTUTE Gold Donating Members 2,639 Member For: 8y 9m 15d Posted 14/01/18 05:05 AM Share Posted 14/01/18 05:05 AM (edited) Plastic 45bend to the manifold Cough cough Edited 14/01/18 05:13 AM by BAXRTUTE Link to comment Share on other sites More sharing options...
Puffwagon Trust me bro...tbh ;) 8===} Gold Donating Members 16,085 Member For: 10y 4d Gender: Male Location: South Australia Posted 14/01/18 05:07 AM Share Posted 14/01/18 05:07 AM You need positive pressure to create bubbles. I spose you could spray it with a thick soap mixture then quickly run to the cabin, rev the crap out of it then run back and check it. Just use ether, it is designed to start a motor and it works well. Link to comment Share on other sites More sharing options...
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