Hi HT....

I know this topic if off topic.... But I'm seriously in need for answers before smog. I recently complete my 4.0 V8 swap on a SC400.... I have been a long term member of HT and will not willing to go any other forum with still couple of civic and integras on hand. I failed on 15mph with extemely high HC and CO with real low NOx and at 25mph I failed HC by just a tad.... Just wondering, if I reverse the vacuum line on a purge valve, will it give me the numbers as stated or numbers on the bottom image... I double check the line from canister to purge and seems like it was reverse. After I switch the line around, I don't have the hesitation from complete stop to acceleration and definitely runs a lot smoother..... Please help...

Recent done:

1) Complete tune up with NGK Spark Plugs, Cap and rotors, PCV, waterpump, tensioner, and timing belt. Timing is on point and ignition system is good. No fuel leak or intake leak. Don't believe it's the catalytic converter because low NOx. I'm going to clean the throttle body tomorrow and replace the air filter





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