Originally Posted by
Karl
It's running around 540bhp for this year, a little up on last year, but the main differences are in the rev band. It's running the same short stroke bottom end as I use in my own car which means 9000rpm upper limit. As it comes on boost at 3800rpm it gives a HUGE power band which is essential for hill climbing and sprints where the car normally competes.
Mike, we had to change to the K&N due to technical issues with the ITG. Normally I have the ITG filters made with an internal plastic mesh to keep the foam cylinder rigid, however due to lack of room this was left out of the foam which promptly resulted in the filter collapsing on boost! Hence for now we're running the K&N until we can find a better solution.
Despite the 9000rpm upper limit, do you actually use this? I only ask, as mine was engine dynoed to 8500rpm, but for engine longevity it has been rev limited to 8200rpm. So I was just wondering if you regularly use the upper reaches of yours, or if it is just where it is "safe" to? If you do regularly use the upper limits, what are your views on how often you feel it prudent to top and tail such a rev monster?
I knew there would be a reason for the filter change - as I know you normally prefer the ITG ones. I hope the collapse didn't damage the turbo
. When mine injested part of the panel filter that got nicked in the airbox lid last year, it fucked the impellor PROPER
.