3" Exhaust on K20 powered cars?

[Troy]

piggyback is the problem. Get a proper ECU in there and he would yield better gains

So as a general rule, would you say piggybacks are not worth it compared to a standalone ECU system, then?

[trism]

a piggy back will normally only allow you to do a couple of adjusments, like say, base timing or fudging the mixture so that the enigne puts in more fuel.

a standalone ecu will do literally anything, from getting your tune to make more power than stock, while using less fuel, all the way to launch control, traction control, boost control, etc etc etc

[CRXDEL501]

a piggy back will normally only allow you to do a couple of adjusments, like say, base timing or fudging the mixture so that the enigne puts in more fuel.

a standalone ecu will do literally anything, from getting your tune to make more power than stock, while using less fuel, all the way to launch control, traction control, boost control, etc etc etc

Yesssssss

[Snoop_gee]

slighty off topic as its turning into ECU's and Tunes. :P
But Kpro all the way!
Motto - nothing tunes a honda like a Hondata.

of course there will be other to knock it but.. its workin for me. So i aint worried about anything else.

[spetz]

So does this mean any NA car will benefit from a "larger than expected" exhaust pipe?
Or is there something about the K20 specifically that makes it react so well to such an oversized exhaust considering it is a 2L NA?

[ericl33]

Green was 2.5 Inch , Red 3 inch exhaust

as you can see, awesome torque and kw gains in the midrange

nice butt dyno.

[spetz]

Hey guys as a follow up question, what happens when a K20/24 hybrid with cams etc? Would bigger than 3" be necessary?

[Snoop_gee]

anything k series as in k20 or k24 regardless of a hybrid K20/24
must or should have a 3" exhaust. Anythin more than that would be overkill.

[Skyline_034]

ahhh niceeeeeeeeee

enjoy the sound