Ok im running The N.O.S. TBI plate system. It is a wet system. Now i made my f.p. regulator adjustable and bumped up the pressure a tad. I was wondering if the bog could be from too much fuel due to the jets being bigger for stock fuel presure. im going to pull a plug tonight and see if it is running rich. Also would timing have anything to do with this? I have it set at zero advance. It was a 6* advance. I am running 89 octane and have had no detonation. I will be putting 4* back into it again when i get the bog fixed and run 93 octane. If there is detonation i will take some out. Just wondering if i could be running it way too fat. I dont want to lean it out unless im for sure its running rich and i dont think the plugs will tell the whole story.

 

If its already rich and you are pulling timing that would give you a hell of a bog. Run better gas than 89 octane!

 

This might be a dumb question, but do you know your nitrous is even flowing?

Dave

 

yep it does flow. It pulls like a bat out of hell after it boggs. Im going to add timing again tonight and change jets to the 150 shot as well as backing off the fuel pressure. i pulled a plug and man it was so rich i could smell the gas. It is going back to stock pressure.