yep... i got a mate with an sw20 mr2
he was running stock turbo but exhaust & filter and 10psi
i was running stock stock... like seriously.. stock
with a bhg to come
and he took me off the line every time... bearing in mind he's also alot lighter than our beautiful tanks
once i repaired the hg and did intake..... NO CHANCE LOL
but ya... intake & exhaust will help out bucketloads