i know they are plenty of threads telling partially what i want to know.. but here it goes, i have a ls block and gsr head. walbro fuel pump, i/h/e. gsr head ported and polished. the mani has the butterflies removed and ive read this really causes alot of low end loss. and the tb is a non gsr tb. so it could be a ls/b16 or a d series because the pulley is backwards from a gsr. i was wondering what kind of gains could i expect if i go s2 intake with say a 68mm tb.. im tuned on aem and made 143whp and 113wtq.didnt let tuner rev past 7k since im running stock rod bolts. i dont lose any oil or anything so i doubt it has low comp but it could be possible, just doubt it. im thinking the tb/mani combo is really holding it back. so if i switch and go get it re tuned, what numbers would i may be looking at?

 

Bench racing. Not allowed. Read the rules before you post.

 

I still think 143 is pretty LOW for what's done. do a compression test if you think that could be it there's no harm in seeing. post numbers of test also

 

can i rent a compression tester at autozone napa etc.. or do i have to buy one?

 

Call them up and ask?

 

it's only 30$ or less lol and a handy tool to have in your tool box but if you really don't want to then yes.

 

alright thanks b swapped.