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As I feel from my car IS250 + Megan Header & Midpipe + Fujitsubo Exhaust, during low RPM the car was slower.
The local garage explain that was the result from too flow pipe. So, you will need to tunning ecu to make it better.
That makes perfect sense about the car feeling slower. Certain exhaust system "upgrades," midpipes in particular, trade low end torque for upper end HP and sound.
However, the tuning ECU comment makes no sense since the Lexus ECU cannot be tuned. The local garage guy probably doesn't know Lexus/Toyota cars very well having said that.
That makes perfect sense about the car feeling slower. Certain exhaust system "upgrades," midpipes in particular, trade low end torque for upper end HP and sound.
However, the tuning ECU comment makes no sense since the Lexus ECU cannot be tuned. The local garage guy probably doesn't know Lexus/Toyota cars very well having said that.
That's the reason why I have to obtain HKS F-CON V-PRO 3.3 for tunning.
Toyota and Lexus Join Mille Miglia For The First Time
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