Rattly injectors

[con67]

Pre-injection despite adding rattling noises inside the car, probably heavily reduces the diesel clatter from outside the car.

You can easily reduce pre-injection to test it, but I wouldn't really advise it as the outcome in any event won't be a desirable one over the long term. Certainly something to tinker with for those inclined though.

I'm fairly certain to get really nice results from it you'd want, as usual, an engine dyno and lots of test gear to see the overall changes... or at the worst a LOT of on-road testing with an EGT probe and also some gear to test engine sound quantity/quality with.

I have a feeling it'll just push EGT up as more injection is done later, and harden the diesely noise from the outside.

Dave

While 'researching' something I found, 2 different vehicles with the same engine, one run with pre-injection (laguna dci) and the other none at all, map zero'd (vivaro van dci). I only looked at the 2 and never went on to see if there was a trend in the vans or was it the country the guy who give me ori was from though........