86 k5 dual exaust

[Metrodps]

As far as I know we didn't do anything to it. The PO had headers on it. I will have to double check. I am limited as to what I am able to do now a days so a lot of things my friend does for me in his service station. I will double check when I see him in morning.

I got the manifolds from A1 Auto Parts (looked just like GMs) and the pipes from LMC Truck.

 

[Metrodps]

We put in a new sensor and he said it wouldn't be that much difference in the temps because of where the sensor was.

On level ground in Ohio on interstate highway I get 15.5 mpg and on my last trip in to Pennsylvania on I 70/76 at 70 mph I got 12.2 mpg.

This is second time in to that area and it is about the best I think I will get. This was with 87 octane fuel I think I might try some marvel mystery oil in fuel and see if it improves on my next trip.