1NZ port & polish

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Originally Posted by ChinoCharles

Wow, a lot to respond to.

About the AFR being wacky, it was taken through the tailpipe.

The next question would be when I dyno the car with the new test pipe this Sunday, should I get an accurate AFR reading due to the fact that the cats are being removed?

And about the shop... this is a local area shop involved in racing engines and they want to break into the subcompact market. They offered me a P&P to display a sticker. They said it would take four days. I told them I am very interested, but I would like to know what they suggest on a low displacement engine like the 1NZ. If they say "nothing different from a Ford V8" I'll be weary.

Theoretically, yea the AFR should be accurate. however, I rarely have seen a dyno tailpipe sniffer that is accurate. They are dropped, stepped on, dirty, and run in the worst possible conditions (super rich, super lean) etc. Just take it for what its worth.

It sounds like they aren't going to do anything radical with the head. Probably just some cleanup and smoothing if they think it is only going to take 4 days. Keep in mind car work is like construction work. 4 days equals 4 weeks. And that is if all the new gaskets are available from your local dealer. They may even use aftermarket gaskets to replace the OEM stuff, so be aware of that.

Ashley