Burger tune for a turbo car re-tune that makes that much HP/torque is changing the waste gate psi to supply the motor with more boost which causes more HP/torque and is turbo related only, trust me I know turbo's since I "might", see the word "might" have had the nastiest I-4 turbo build on the board. Stock no turbo boost was 200+ HP on the Metric motor and I could add anywhere from stock closed waste gate (No boost) to right under 500hp with boost around 25psi. I could make any HP/Torque from 200-500 by waste gate changes with a Gizmo "Scramble" and a squirt of meth, with Barrie's tune. I had a Technique tune from Nick and a Mark D tune and none came close to Barrie's at BMWCONNECT. Burger does not show a tune for the M44 and your Bimmerfest link is a dead link so I could not view it. Nick G's tune, Technique, shows less then 3HP gain and less then 4ftlb of torque which is a super conservative tune and you won't even feel it on the "seat dyno". With a stock motor stock tune you will gain maybe 10+ HP/TQ and more if you dial the cam overlap with a good tune. Ask the members on the board about Barrie's tunes and how they compare to other coders tunes. You will find many people that will back up his work plus he will not charge you some ridiculous price... Best, John Smith Last edited by xxxJohnBoyxxx; 11-06-2015 at 05:41 PM. Reason: Spelling |