My 2 cents. 5mt on is38 is a monster. You on base flash apr tune. 23-16psi. I run 28psi taper to 24psi at 7k rpm and car pulls like a freight train. Its a low to mid 120car. That being said. Base apr flash ya has some to be desired. Turn it up and its a completely dkfferent animal. I get zero corrections and no misfires. 5mt is an absolute beast for highway rolls. And the spacing is a 2-3 is fine i rev to 7k and its puts me right in power zone.
Also you dont need injectors or any fueling upgrade.
I pulled hpe650 hennesey gen2 ctsv 60-130mph by a car
I pulled vargas stage 2 upgraded turbo n54 (530whp) by half a car 40-140 (we did alot of pulls)
I pulled a bmw 840i turbo on v8 on 15psi (490whp) by bus lenghts lol.
The reason 5mt actually works great is the wheelspin to lag ratio is perfect. Long gears mean no crazy wheel spin. You can load car spool and stay in power for a long time. Might not feel the fastest cuz you just riding out a gear instead of banging gear but trust me.. my is20 setup on 27psi would’nt even hold a candle to the is38 set up. 70-110mph i dropped 1 full second lol
Logs
Jb4 stack
https://drive.google.com/open?id=18Uh3sXPBH4KxcYGQ82_BTzlERI7ukPUI
Apr vs jb4 stack +6psi
https://drive.google.com/open?id=1sFgLXQaqWLUV_3TSnmDrnrWDzNgcGFSA
Accleration video
https://drive.google.com/open?id=1PxdL4qAib7NF91m04NidsIudNmH7EZ7O
Armchair racer : theres only been one is38 failure on 1.8tsi. And that car was stacked, r injector, and ethonal mix with 17’ advance (apr100) on water meth and running same boost i was. It took a shit due to leaning out a cylinder not because of power.
Also will be going to drags and dyno soon to see what she does. But baised off of races i’ve done I expect some really good numbers on dyno. And if i can drive a decent track time. Ha gotta find a set of hoosiers first