I see lots of HKS bolt on kits that are made for the ge8. But whats the maximum boost you can give the Fit before it chokes and pops?

 

There aren't any bolt on kits for the GE8, those are for the GD3

 

Read this thread:

https://www.fitfreak.net/forums/2nd-generation-ge-08-present/65381-bent-ge8-rod-pics.html

Do a search on Lyon[Nightroad]'s threads and DiamondStarMonsters threads. Between the two of them you should get a good idea of what you're looking at. Be prepared to do... dun dun dunnn COMPREHENSIVE READING. Yes, we all hated it in school.

Good luck!