Originally Posted by
homerent@telus.net
My 03 LB7 with a magnaflow 4", edge Attitude, and AFE stage 2 with a Banks Big head, pulls 25 psi of boost in 4th towing a steep hill at 2500 rpm. It tows great at 70 mph and gets 15+ us MPG towing. between 1500 rpm and 1800 rpm the torgue seems real weak pulling any kind of a grade. I emailed banks but got no response. Should I crank up the Big head to improve torque in that range.
My second question is I am starting to hear that aftermarket intercoolers make a big difference, in both power and mileage. can someone tell me thier experiences with the larger intercoolers. 1700 bucks is a large amount and I am hoping to find out how much difference it makes. Second question do they just benefit during towing or all the time given the cooler air going in.
Thanks
TG
I installed my new BD "Cool It" Intercooler yesterday. Did a long test drive today and noted that @ 70 mph on the Interstate that my egt's were down 50 to 75 degrees and that under full throttle accelleration 0 to 110+ mph the egt's were down by about 125 degrees with my Kennedy ECM on the 100HP setting. The install was pretty easy even for an old Guy!
'03 Chev Duramax ext. cab, Kennedy ECM,After Market turbo,tranny, triple disk convertor, Exhaust Brake, electric tran. cooler, dual exhaust, Supertank 57 gallon.