Quote:
Originally Posted by RoyB
Oddly enough the two runs were from the same pass. The 0-60 was invalid while the full 1/4 was not. I only did one run since I couldn't stop the car with the all season RFT on. I didn't want to risk starting on a more flat area and not being able to stop the car in a hurry if I had to. Which is why the MPSS are being put on  Safety first.
As far as a full on tune being faster, yes, of course it will. I had the JB4 left from my X3M and it bolted right up, so why not. I felt a noticeable difference on that car. I find it odd that the M340i I don't.
This is what I am afraid of. I did ask Terry why the speed and 1/4 seemed the same as what a stock car would run even though I was seeing significantly more boost. He of course did not respond that to that question 
I always thought the JB4 was a joke until my buddy put it on his Golf R. I had a real tune on mine and he was JB4. His car was just as fast as mine. I was DSG his was manual. I would kill him out of the hole due to launch control. Roll races were down to whoever got the jump though. |
Yeah, is what it is with JB4... I emailed him several times about the boost dropping and that there had to be an issue with the F30 B58, he claimed everything I said was wrong and it wasn't dropping boost this or that... until he later confirmed F30 B58s were fuel limited.
With these I think it's stepping over the TCU torque output limit, i've noticed in stock form it only picks up 22-23mph on the back half and I can shift the car at 6000, 6500,7000rpm launch aggressively with or without launch control etc etc etc it still goes 12.08-12.20 each and every pass like clockwork heatsoaked, hot lapped, parked for 4hrs etc etc etc. The controls know what we're trying to do.