Mitsu3

Ever since i have added the basic mods and tuned my car seemed to lose power at about 1000-2000 rpms while taking off. I feel it when taking off from a stoplight etc. I have to rev a little higher than before while starting. Is it the tune or the 3" exhaust? Also the stock clutch is shuddering sometimes on takeoff and engaging higher? Anyone have this problem after the basic mods? Should i get retuned?

Turbotrix tune, ams tbe w/hfc, kn drop in, hallman mbc 22psi, licp buschur, walbro 255 fp...334hp 334 tq at the wheels on dynojet

Jim in Tucson

iTrader: (3)

This is why you need a before and after dyno graph.

Chances are you are actually not losing power in the 1,000-2,000 rpm range. However, since you are now making an additional 100 whp above 3,500 rpm, it makes the lower rpm range feel much slower.

Put some cams in that puppy...then get a re-tune.

lemmonhead

adding the exhaust will do that. You loose the low end torque, you have to increase boost change MIVEC/Boost to make up for it.

TouringBubble

iTrader: (2)

Mine shudders a little on take off when cold ... you do lose a little torque with the exhaust, so just rev a little higher.

Mitsu3

yea it was probably the exhaust b/c there is a difference at low rpms