What is the Fastest you have Ever "Theoretically heard" of an Si with a 1.5T going

RehabJP

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I know the factory governor kicks in at 136 MPH if I am not mistaken. I also know you can remove that restriction with an ECU flash. Just curious what is the highest speed you have lets say heard of an Si with a 1.5T go and with what mods and tunes? I am just wondering what the upper speed limit you could get out of a 1.5T with reasonable modding. Obviously at some point the gearing is going to limit the top speed maybe even before the engine would but I know the gear box will take it past 136.
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Masked

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I personally went 134mph, that's with a PRL SRI and TSP Stage 1 tune, I was only in 5th and could have gone faster but no point in killing myself lol
 

EP3R-T

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If you're tuned and like to romp on it in overdrive gears, you can "theoretically" get into the 160s without raising the redline cutoff, with enough real estate of course.
 


shibles

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147 is the most here, but any higher you will need a lot of room
 

suhhh

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My good buddy @jkim19SI has hit 172mph

He's PRL GTX2867R, FBO, and flex tuned by drob, I think his numbers are like 357/350 or something like that
 

LampRod

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Almost topped out but went 130mph on a empty highway but the car felt sketchy at that speed. Completely stock expect for intake. It started to wobble a bit and I had to stop but it got up there faster then I expect, might have been a slight downhill not sure.
 


Onealt21

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pretty sure this thread is dead but I've been 168 before letting off car kept climbing steadily however though
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