159 Cruiser and
AO Silver Member
Join Date: Jul 2012
Location: United Kingdom
Just a bit of feedback, I've had my dongle on for a couple of weeks now. Up until today, I have used it only in the 'EGR delete mode' (it does nothing to the EGR, but stops the EGR blocked warning light). My engine has not been altered in any other way (eg remap)
When I fitted the dongle, I also fully blanked the EGR. Despite having and EGR restrictor plate on before (diamond with 8mm hole), I saw an immediate benefit at sub 2,000rpm, where the car was far more responsive (I should add this is on top of the immediate benefit of the restrictor). This was a perceptible improvement in sub 2,000rpm pick up. For Mpg (I drive about 500miles a week), and found that Mpg improved about 2mpg during this time. Despite trying to maximise my mpg before fitting this on numerous occasions , I easily beat my 'best mpg' (by just over 2mpg over 200miles) within a week.
Today I fitted a fully cored DPF, and whilst the effect was not as immediate and perceptible as the EGR delete, above 2,000rpm, the engine pulls stronger, and boost increases quicker than before, this was a small increase (perhaps because it comes in more gradually than the EGR delete which works from a standing start).
Hopefully I can come back in a couple of weeks and give an update on MPG with this change.
I should add that on removal of my original DPF (I was given a spare which I cored out to 2-3" square inside), it was in excellent condition, with no blocked pores (unlike the donor), which would theoretically increase the returns on performance
159 1.9JTDM Ti and Giulietta 2.0 Veloce
ex: Punto 55s, Golf Mk5 1.4FSi, A3 (8P) Sportback 2.0TDi SE, A4 (B8) 2.0TDI S-Line, 306 HDI Meridian
Last edited by giblets46; 21-06-13 at 12:30.