b21a1 prelude TB cams PandP exhaust n/a

[crluver123]

this is the final tune completed on the dyno for a 1990 prelude Si

put out 143whp @5800 and 141wtq @4800, with a wickedly awesome torque curve. aka LOTS of "area under the curve"

mods are:
-b20a5 block bored to fit oem b21 pistons
-stock reconditioned rods
-b21 intake mani port matched with very mild porting
-60mm throttle body and plenum matched to it
-web cams grind #13
-micro-polished and balanced crank
-DC 4-2-1 header for b21
-b20a5 head with 3-angle valvejob, all new valves and springs, stock retainers, mildly ported
-stock 240cc injectors that were recently cleaned and balanced
-adj cam gears set to 0 (didnt have enough time at the dyno to play with them)
-block decked 0.012", head decked slightly (forget how much)
-final compression ratio = 10.3:1
-tuned on 93 pump gas

i tune crome pro and hondata s300 myself, so this is my completed tune on a customer's car