Well at least you know how to test a BOV in water now, there must have been a reason I put up that vid?
Throw it away, you won't fix it, they're crap.
Modified factory ones are unbeatable.https://www.youtube.com/watch?v=l9JRbr1Cfuc
As for your dyno sheets, well with a 12 PSI tune and TDO4s the torque should have pretty much flattened off when you hit 12 PSI which would have been 2500 to 3000 ish RPM....it's low but keeps on climbing. ...it's shows that you've got a boost leak.....it's got to be the shittiest amateurish dyno sheet I've seen in years....you'll have to go back and get it done again only properly this time.
Same goes with the 16 pound tune, the torque should flatten when the boost hits 16 pounds, it'll then drop off a bit by 6000RPM
I see it's done in 4th gear too?
I would have expected it to be done in 3rd for less drivetrain loss which is pretty much normal for GTOs.
The squiggly lines for both power and torque in the upper RPMs, that's usually caused by wheelspin on the rollers, in turn because it wasn't strapped down hard enough or too much tyre pressure for the rollers or both....that's 'cos the dyno calculates engine RPM from roller speed via the input of a number for gear ratio.
Who's the tuner? A proper tuner should have fixed that. ...a data fiddler can't.
OK you don't want to say.
I can understand....lol
There's no way I would ever be happy with that.
At 16 PSI you should be seeing about 420 horses, 100RON and 3rd gear.
Quote Batooh "Alot of what you say is good but alot of it is just plain opinionated. I don't want you to change".
You mean I actually KNOW what I'm talking about?....everyone else just makes it all up?
All my opinions are backed up with over 40 years experience, qualifications and lots of measurements........when's the last time I made an incorrect statement on here?
Like I told you your speedo and tach will still work because they're NOT affected by the ECU....the ECU pins for these functions are inputs not outputs.....you still seem surprised?
But you factory boost gauge probably won't work anymore but there's no reason why it can't be made to work....with input from someone who knows what they're doing.
quote from barryboys.
Yes, yes, yes, that might be so, but you're clearly missing the bigger picture.....