Wanting 350-400 hp, on3 turbo, what else do I need?

[sluggish94]

I'd recommend you at least add a steel gear stabilizer to your T5:

https://www.5speeds.com/t5.htm

These make the T5 much tougher.

I just recently learned about this too. Hanlon Motorsports makes an identical product. The piece in your link, do you know if it fits the 94-95 T5 or is it just for the 87-93 T5?

 

[1996GTNA]

Like the title says. I have a 255 lph fuel pump already installed.
So besides the kit on3 sells, what else is needed for 340-400 hp?

Is a microsquirt ecu needed? If I do get microsquirt or megasquirt does my car still need to be taken to a tune shop?

Not sure if you've seen this page, or if this the turbo you are looking at, but it has a lot of information on what is needed with their kits. Between that info and the shared been there/done that of the members here, you'll probably get there relatively easy.

 

[Road_Runna]

I'd recommend you at least add a steel gear stabilizer to your T5:

https://www.5speeds.com/t5.htm

These make the T5 much tougher.

Yup, added that in with my rebuild as well, with both of my pre-load for the stabilizer and input/tail shafts within (.003"). Doing some home repair and work, I just finished her up about 4 days ago and will be mounting it back on with new motor and tranny oil.
I used anaerobic gasket maker for all the mating parts and thread locker where needed and simple green to clean off my old parts and it worked great.
I order my gear stabilizer from 5speeds. 94-95 t5 wc