Re: For those who are thinking about Bluespark...
Originally Posted by ExcursionDiesel
The Bluespark has different selectable fueling "curves". I forget the sequence but basically A is stock, B is economy, C is torque, D is ?, and E is highest performance.
Some of the settings made lag worse. The ones optimized for low end torque improved the lag. I ended up on E and lag is slightly better than stock but medium to heavy throttle is pretty aggressive compared to stock.
Anytime the engine returns to low power, reapplying power requires the turbo to spool up again. A more aggressive push on the accelerator will add fuel, make exhaust heat, and spin the turbo quicker. All turbos behave this way in varying degrees. I don't even notice it anymore since I don't drive any normally aspirated cars regularly.
To clarify, the Bluespark has 5 curves:
A - economy
B - economy/torque
C - torque
D - torque/power
E - power
Each curves has magnitude levels 0 to 9. 0 is exactly that, zero (stock) regardless of the curve. Thereafter it's roughly logarithmic so it jumps to about 50% for 1 and roughly proportional thereafter to 9 which is 100%.
I've tried the higher levels of E but was disappointed. For power, one needs high revs which is not really what I do nor is it where this diesel or any diesel is happiest. Torque is what diesels are good at so I went all out with C9. Man the thing pulls like a steam train with just a touch of the pedal. Turbo lag is totally overshadowed by the humongous torque. I haven't had any codes yet even after overtaking trucks up hill at 130kmh while towing a camper trailer.
Ordered 9 Nov 2011 - Delivered 3:30pm Friday 13 April 2012
Jeep Grand Cherokee Laredo 3L CRD, Black Forest Green Pearl, Quadra-lift, Off-road Adventure II, Front Recovery Hook, Mopar Tow Bar, Mopar Rock Rails, 150A Projecta Battery Isolator, Tekonsha P3 Brake Controller, Bridgestone D697 265/60R18 LT, Kimberley Kamper Special Edition
MudMap M7 off/on road sat nav, Chief Recovery Hooks "chrome", Chief 3mm Sump Protection Plate, Bluespark pro+boost tuning module set on C9, Chief Lower Front Guard