Thread: FD 4.88 Problem
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Old 02-25-2021, 11:34 PM   #27
86TOYO2k17
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Quote:
Originally Posted by AlmondChassis View Post
Thank you for the explanation and your experience with 4.56! I'm on 18” Wheels with 245/45/18 tyres Michellin ps4. (The tyres in this size was pretty cheap. I know 245 is overkill for the car unless FI) If its 4.88 then I'll get that. Here in Australia max speed limit is 68mph (110km and its not often that it's that speed limit where I live) And I live urban so its more about digs and getting to 60 here. The stock auto ratio is just too long for city driving and going from a light. I kinda wish we had the speed limits in America would be nice
A 245/45/18? Thats a massive difference vs stock. Stock is 24.6” thats 26.7” , if that’s your actual size tire then a 4.88 would be almost identical to my old 24.9” tire with 4.56 fd setup. So going that aggressive makes more sense.

Speed limit here is 60mph on freeway. 45-55 on hwy usually.

My NA setup on 92 octane ran a verified dragy 0-60 in 6.6 or 6.4 1ft roll out. fastest I’ve seen an NA auto run especially not on E85.

4.8 / 4.6(1ft) on FI setup, swapped to a 4.3 FD with 25” tire once FI.
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