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Hey, was just wondering if any experts could help me figure this out a little better, fairly new to swapping.. I have a 91 civic with a d16zc in it, I am taking the engine from my 92 prelude with a H22a4 in it. Both cars are still together and running. 92 prelude is running old OBD1 ecu (vtec...

I swapped from a d15 non vtec to a d16 vtec, the manifold went from 4-1-1 to 4-2-1 but I'm using the 4-1 manifold right now because I don't have a down pipe for the 4-2. How much does this effect my performance? the d16 is running at about 160-170 compression (108k on d16,) and it just seems...