With all the posts regarding pumping the 160 I'm suprised people are asking about it. Just do it! This engine is a bargain and for $25 more, it will kick *$$ on anything in it's class. Guys at our field restricted the exhaust to get it to run but after pumping it and removing the restricters this motor runs like a raped ape. There is one at my field on a WM Extra (80" wing) and it has unlimited vertical. It just don't get any better, for the price or fuel economy. If you have this engine then you've decided to move up to bigger birds. This isn't your trainer with the tank 1" from the carb. Don't skimp, pump it and you'll wonder why you were so resistant to it before.

Tripacer , earlier in this thread I wrote about getting the fitting for the EFI version of the 1.40/1.60. It replaces the backplate bolt next to the needle valve. It's a hollow bolt with a barb. easiest way to do it.