boost limit

[philS2]

is there any way to raise the boost limit above 11 psi without a chip?i've got mine set at that and had it on a rolling road and the fuelling's spot on.

 

[shineydave]

a decent tuner won't neccessarily raise the boost to increase BHP, there's other things they can do first like increasing the timing. i'd bite the bullet and have a few quid down getting someone who knows how to get the best out of your engine on the case

 

[philS2]

cheers dave

 

[shineydave]

a bit of personal experience, a pal of mine has an S4, both our cars are pretty much identical. we both have remaps and run similar FATS times (5.1 secs). when you compare his logs to mine he runs more boost (17psi agaist my 15psi) but less timing. i'd rather run my map because it gives the same results but stresses the turbos less.

when he went for his timing belt swapping he found the timing a tooth out, seems it was set like this from the factory as this was the first belt change.

sort of highlights the need for optimising the engine rather than just winding the boost up. we should do some more logging now. his, in theory, should be quicker now so it'd be nice to see what improvement setting it up properly has made.

 

[philS2]

be sure to let us know the results if you do some logging,mate.

 

[shineydave]

lol, only if his is slower, if he knacks me it'll be a secret that follows me to my grave