Well the reason is that the reason people like ATI is because they are intercooled a intercooled car is easer to tune, and easer on parts because it is easer to tune.The Ati need to make more boost at the blower then the s-trim because of the intercooler.You lose somthing like 3-5 pounds in the intercooler. So the answer to you question is no one is not more efficent then the other .you can get a ATI with out intercooler.You tend to get more from the ATI if it has no intercooler. Sorry it was so long if you have any other question. E-mail me mazur50@aol.com
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1989 lx with a blueprinted AOD and Pi converter headers off road h-pipe, msd6al, electric fan, underdrive pulleys, 3.73 gear, 2 chanber flowmasters, subframe connectors, K&N cone filter, Factory Five control arms, Trans cooler, 150amp alternator, 255 lph fuel pump, 50_175 hp shot
with out the nos got 1.90 60ft on pepboy tires
225 60 r15 i need slicks New B&M Hammer shifter and New ford cable and a set of pony rims
www.geocities.com/mazur50/
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