mods the turbo's are still a little laggy, but if you get a full throttle shift kit than lag won't be an issue at the track. The .86 a/r will give you 30-50 more top end whp which will help at the track. After getting my engine tuned I am fairly happy with the .86 a/r on the street. Also you should consider the 4.10 gears; they help make the car more responsive.
