1. Is there a difference between the D16y7 and d16y8 intake manifolds? If so what?
2. If i pick up d16y8 intake manifold is there anything precautions of extra modifications to be aware of? ie sensors etc..
3. i also have a 88-91 Throttle body. Should i try to bore it out or get an d16y8 TB?
I have a 88 CRX DX with a d16y7 converted to MPFI

 

the y7 has a downdraft style intake manifold while the y8 is a traditional style mpfi intake. the y8 is considered the best intake manifold for the d-series. it will just bolt on to the y7 head. try and find an intake manifold from an auto and u won't have to deal with the iac since u can just use your y7 t/b.

 

i thinki i have a d16y7 intake manfold and the guy who sold me my car said the TB is a 88-91 civic Si

 

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if the intake manifold has no plenum, the t/b is a downdraft style one not a side mounted one u have the y7 intake. u can use the si t/b with the y8 manifold.

 

ok then iguess i prbably have the 88-91 Si maifold

if i get the y8 then would it be worth it to upgrade to a y8 manifold?

 

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am i going to have problems hooking it up?

 

is there any wiring problems? since it is a vtec intake manifold and im non-vtec