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It's not rubbish. As you yourself said, a properly prepared petrol engine is just as good. It does need that extra attention initially which the diesel doesn't, however. You don't need to arse about sealing distributors and suchlike on the diesel, hence that statement of Ian's would only be poppycock if comparing a diesel to a prepped petrol, not a standard petrol.
Thank you, thats really what i ment, obviously its possible to "prep" a petrol for wet but its a lot of prepping whereas as deisels are much more tollerant of wet, without prepping,
main things are the intake, the alternator (which tends to set the electrics all a dither) and ya axel breathers etc all fairly easy to give some protection to,
If you could find a way around the ecu limiting boost to around11psi and putting the engine in limp mode then by upgrading the turbo,injectors,fitting an intercooler air intake, re mapping the ecu if it's possible and a few sessions on a rolling road then I'm sure it's possible to get more bhp from the engine. But what you really want is torque.you can have all the bhp you want but if the torques not there then a two ton truck ain't gonna move any quicker.so my advice would be to tune engine for torque not power.
so my advice would be to tune engine for torque not power.
Its what diesels are good at.
You will want to tune the gearbox ecu to make use of the new torque too, rather than having it rev out of the top end of the peak torque band before changing up, as currently seems to happen!
I've noticed by locking the TC, its possible to run a taller gear longer, and you can really feel the torque at lower revs pulling well! Pulls fine from about 1500rpm, much less noise, and presumably less fuel.
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