So currently I have my stock 90 b18a1 intake manifold installed on my b20z2 and a friend of mine is giving me his 97 L’s intake manifold for free. Is it worth the swap?
Ive got both sitting in front of me right now and the only difference (apart from look) is that the one off the B18b1 has a throttle body port that is 60mm compared to the B18a1 which is 58mm.
Ive heard the B1 flows slightly better, but it depends on who you talk too, there pretty much the same if u ask me.
If youve got both anyway, use the B1, then find a 60mm throttle body to make use of that 2mm. Dont expect extra hp, but the throttle response might be alittle better.
If its free, why not?!