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Old 01-11-2021, 09:41 AM
rockitdoc's Avatar
rockitdoc rockitdoc is offline
Join Date: May 2020
Location: Fort COllins, CO
Posts: 209
Default Which FI?

Lycoming requires picking between Avstar and Airflow Performance. Both look like great choices, but which one?

Any opinions?
Begun 07-23-20
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Old 01-11-2021, 09:48 AM
BoydBirchler BoydBirchler is offline
Join Date: Jul 2020
Location: Indianapolis
Posts: 70

They are both nearly the same design. AFP has a few minor differences that may make it slightly better. So in my mind if cost is similar, I would go with AFP.
If there is a large additional cost, then I would go with the lower price.
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Old 01-11-2021, 10:53 AM
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DanH DanH is online now
Join Date: Oct 2005
Location: 08A
Posts: 9,876

Definitely not the same design, just similar operating principle.

Right now you can't even get a service manual for an avestar. Airflow comes with a thick book and very good telephone service.
Dan Horton
Barrett IO-390
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Old 01-11-2021, 10:59 AM
Nova RV Nova RV is offline
Join Date: Aug 2015
Location: Leesburg, VA
Posts: 526

The AFP will require an adapter plate kit (available from AFP) to buy for control cable installation vs. kit and the intake snorkel requires a minor modification that takes a couple hours of time. That said, with AFP as Dan noted, the fact that you get an actual manual and also if you call them, you can talk to the owner of the company for support.
Chris Moon
Leesburg, VA


RV-14A kit # 140243 (flying as of 11/18)
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Old 01-11-2021, 01:24 PM
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rzbill rzbill is offline
Join Date: Nov 2005
Location: Asheville, NC
Posts: 2,727

I'm curious.
My YIO-360-M1B came with a Precision Airmotive RSA-5 clone.
Are they really not available through Lycoming any more?
Bill Pendergrass
ME/AE '82
RV-7A: Flying since April 15, 2012. 850 hrs
YIO-360-M1B, mags, CS, GRT EX and WS H1s & A/P, Navworx
Unpainted, polished....kinda'... Eyeballin' vinyl really hard.
Yeah. The boss got a Silhouette Cameo 4 Xmas 2019.
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Old 01-11-2021, 03:32 PM
Gusmax Gusmax is offline
Join Date: Jun 2014
Location: Sherwood Park, Alberta
Posts: 84

AFP also has a clever purge valve addition that allows you to purge the hot fuel from top of the engine to make for easy hot starts.
Phil Kite

F4 Raider project with RV-8 wings and tail
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