10/11/2025
So we road tuned to our track civic on the new engine combo and then put it on the dyno both to get numbers and to try squeeze a bit more power out it.
We arrived with are base road tune made 352whp (395bhp) at 10.6 psi which is pretty good but we set around trying to improve it. Tuning it on the street with my homemade knock cannons ( at 10 psi we started to get knock at 18 degrees of timing so we pulled it back to 16 degrees this engine is higher compression than I wouldn’t like to run on boosted engine at 11:0 (comp pistons) so I suspected it would want a lot of timing with just pump fuel (Tesco momentum) .
Targeted 12.0 afr which where within 1 percent from target . We targeted 11.0 -12.5 afr really made real difference. So we settled at 12:0 afr target on wot 14.5/7 at cruise and idle
Are main gains came from intake cam angle changes ,
We started out at 45 degrees to 5500 rpm then tapered off to 30 degrees at 8200rpm(redline). We tried 35 degrees lose power so then we went the other at 25 degrees made a bit more at 356whp . Then we tried 20 degrees made 358whp. The we tried 15 degrees to make 360whp. K24s doesn’t like a lot of cam angle I find about 6000rpm with stock ish cams whether it’s na or boost.
Car already felt amazing to drive on the road power is relentless not like a turbo whack just constantly liner power .
We can get more power with a pulley change to a smaller supercharger pulley but this is the sweet spot with ep3 I think low 400s
Car is up for sale she is by no means perfect but she as good bones absolute na