Originally Posted by
TomErickson
I have learned a lot from this thread and have had a lot of success tuning my 121VR engine. My focus is racing so I am now tuning to get the best balance of performance vs. fuel economy. What facts effect fuel economy?
I have installed a 7.0mm venturi and am able to run consistantly about 9:30 minutes. I plan to try a 6.5mm venturi but would also like to consider another pipe. I am using the Reedy 2035 pipe which is supposed to be a good balanced pipe. I selected this pipe since I am running a Reedy engine and the cost was decent to get started. Now I want to understand what other pipes can do for the performance vs. Fuel economy trade-off.
How do you choose a pipe?
Pipes can be hard bro
There is much advice to be had in the forums about pipes but there will definitely be some deep searching involved and alot of reading
Supposedly reedy engines are similar to old os vspec so find what pipes people are choosing for the arrow which i know is identical to old vspec
My guess is 2090 pipe