Head Porting - ZR-1 Net Registry Forums

Locobob · 03-17-2009

Paul: The siamesed plenum/injector housings were done on purpose. You can read up on the process in this old post from the other forum http://forums.*************.com/c4-z...ore-power.html

Jim: Sounds like the HP bug bit you pretty hard, should see a big difference with the new mods. I'm not a big fan of open loop only chips. Running rich in part throttle driving conditions is going to dirty up the motor. Emissions testing will also be a problem if you are in an area that requires it. I'm not an expert on the subject though. I'd suggest starting a thread on the topic, we have some folks here who are quite knowledgeable in regards to tuning.

03-17-2009	#16
Locobob Join Date: Jan 2004 Location: Portland, OR Posts: 1,047	Re: Head Porting Paul: The siamesed plenum/injector housings were done on purpose. You can read up on the process in this old post from the other forum http://forums.*************.com/c4-z...ore-power.html Jim: Sounds like the HP bug bit you pretty hard, should see a big difference with the new mods. I'm not a big fan of open loop only chips. Running rich in part throttle driving conditions is going to dirty up the motor. Emissions testing will also be a problem if you are in an area that requires it. I'm not an expert on the subject though. I'd suggest starting a thread on the topic, we have some folks here who are quite knowledgeable in regards to tuning. __________________ Robert ZR-1 Net Registry Oregon State Director 91 ZR-1 #431 Black/Black LPE 368