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Well from Dundon's latest dyno run with the GT4RS it looks like some modified GT4s are going to give stock GT4RS a run for their money. While the RS has a clear gearing advantage, the GT4 + Dundon exhaust is only 20HP shy of the RS. With a tune and updated back box a modified GT4 could likely match these numbers and is looking like a real steal with current market price for the GT4rs being 2x the "base" GT4.
Of course a similarity modified GT4RS would regain a significant advantage, and I'm sure that Dundon's magic will result in some jaw dropping gains (based on how restrictive the OE exhaust looks).
@BabyNSX
Not sure the rear box is holding back TQ/HP that much?
Avera
Not sure either, but I recall Dundon saying that their prototype box did net them some power improvements. Given that < 3 HP improvement wouldn't be worth mentioning, and > 10 HP would be very unlikely, I would guess there might be 3-6 HP to be had by replacing the OE box.
Not sure either, but I recall Dundon saying that their prototype box did net them some power improvements
By the way, I love the color of your GT4 . . . it is one of those colors I really enjoy seeing on other owner's cars, but not one I am sure I would enjoy on my own over time. I know that sounds like a back-handed compliment, but it is not at all.
...I know that sounds like a back-handed compliment, but it is not at all.
Avera
Nah... I know exactly what you mean. There are plenty of colors out there that I think are truly awesome, but that doesn't mean I think they suit me personally. Thanks for the complement!