the R18 ECU will compensate 5% +/- richness/leaness to tune itself. According to honda. This is why the ECU will lower the whp. I would assume that the 9hp run was done without resetting the ECU and after it learned for a bit then you guys got 3hp.
I bought this same header a while back and absolutely hated it. It made the car sound like shit, and it had no torque until you got up into the high rpm's. I suggest anyone looking at buying one, don't. I'll sacrifice the 5hp for a better sounding better torqued car.
Actually the 4 to 1 is done inside the block, therefore there is no room for a real header. A huge design flaw for the Non-Si owners. Keep in mind that was a prototype.
just a bump for info...
the R18 ECU will compensate 5% +/- richness/leaness to tune itself. According to honda. This is why the ECU will lower the whp. I would assume that the 9hp run was done without resetting the ECU and after it learned for a bit then you guys got 3hp.
JmChadillonProduct 2 years ago
I bought this same header a while back and absolutely hated it. It made the car sound like shit, and it had no torque until you got up into the high rpm's. I suggest anyone looking at buying one, don't. I'll sacrifice the 5hp for a better sounding better torqued car.
jamyviper12 3 years ago
so what were your numbers to the wheels? and what all is on it during this dyno? thanks.
DennMann89 3 years ago
wow im disappointed that sounds like shit. with the r18 can you do a 4-2-1 header, im confused as to the necessity of that ball thing.
manmaker 3 years ago
Actually the 4 to 1 is done inside the block, therefore there is no room for a real header. A huge design flaw for the Non-Si owners. Keep in mind that was a prototype.
Jonle28 3 years ago
wait, so theres just one hole coming out of the exhaust side of the block? thats really weird.
manmaker 3 years ago
i wonder if hondata makes a reflash for the R18 that would let the header get all its 9 hp?
ACCoolGuy4X 4 years ago
I would think so. It would make sense for anything but the ECU to be correcting the physical mods.
Jonle28 4 years ago
sounds real weird...maybe it's just the video...bump for better sound.
maverick27502 4 years ago
could u tell me what was hp thanx to that header?
kamil511 4 years ago
man that thing was glowing!
m1k3AA 5 years ago
So that's what it looks like under my hood when I get onto the highway. I wonder if that heat causes any problems to the things around the cat.
Zarme 5 years ago
dude there is no cat anymore
ChrisTripp 3 years ago