Type R Club of America

I have an 01 gsr that needs to be rebuilt this spring and im toying with the idea of building a 'poor mans type R' motor

b18c1 block
b16a2 head
skunk2 stage 1 cams (or ITR cams if i can find them)
valve springs/retainers/etc
p73-A0 pistons
itr intake manifold
plm 4-2-1 header

would a stock USDM p73 ecu run this setup? i need to be obd2 compliant and do not want to do any tuning at the moment.
from the research ive done, it should bolt up and i can program the immobilizer myself or just get it disabled.

has anyone done this?

Should work just fine, and many others have done this previously.

If you want to refresh the P72 head instead of finding a PR3 head, you can also do so and purchase the old blox or gen 1 Skunk-2 ITR clone intake manifolds. They are available used and are very similar to the original P73 intake manifold, within the bounds of a stock ECU tune.

GeHonda wrote: ↑Wed Feb 12, 2025 9:17 am Should work just fine, and many others have done this previously.

If you want to refresh the P72 head instead of finding a PR3 head, you can also do so and purchase the old blox or gen 1 Skunk-2 ITR clone intake manifolds. They are available used and are very similar to the original P73 intake manifold, within the bounds of a stock ECU tune.

thanks!

I've read the PR3 head flows better..I guess not enough to make a difference?

will the slightly higher commpression ratio be within bounds of the stock ecu?

as far as the heads go..do I need to upgrade the full valve train to spin it up 8400? or can i get away with just doing the springs?