Bosch Pump Chatter

[Ruan]

The problem you'll find, James is that when you get the pump to the point where it doesn't smoke at all, you'll find it'll actually be worse to drive, it means that unless you just NAIL through gears, the lda pin doesn't drop all that easily because you don't have the fuel there to create the hot exhaust gasses needed to spin the turbo...

I had my car to a point where there was NO smoke, but in the end, I just reverted it to standard, because it ends up being laggier and you've not got the fuel there to spin the turbo...

That's my opinion anyway, if you have a turbo that spools fast enough, you don't really need any smoke control, once I'm actually moving, my car never smokes unless you drop it into 5th at 1200rpm, but you won't get a huge amount because the LDA hasn't dropped... You need the boost pressure there to drop the LDA, which means having boost - but whenever there's enough boost to drop the LDA, it'll just instantly spin the turbo up to full pressure, burning clean with just a slight whiff as it spins the turbo up...

Remember - a larger injection head puts the levers back into their "normal" range - you've just got to work on the low throttle control... It means that you aren't having to modify the levers to give yourself excessively long injection durations, which would be much shorter with a larger injection head...