# Detonation ??? **URL:** \ **Category:** PittSpeed Automotive\ **Created:** [April 22, 2007, 11:01am UTC](https://forums.speedlife.net/t/detonation/189438 "2007-04-22T11:01:43Z")\ **Posts on this page:** 1\ **Showing post:** 5
**Author:** ![tom\_vito](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/tom_vito/32/6000_2.png) [@tom\_vito](https://forums.speedlife.net/u/tom_vito)\ **Post date:** [April 22, 2007, 3:36pm UTC](https://forums.speedlife.net/t/detonation/189438/5 "2007-04-22T15:36:05Z")
> [@Post Pics from 5/20 Nyspeed BBQ @ Chestnut Ridge](https://forums.speedlife.net/t/post-pics-from-5-20-nyspeed-bbq-chestnut-ridge/29590/117): > > how do you have your vacuum advance hooked up? you should have it on a timed vacuum port which only pulls vacuum off idle. the other ones pull vacuum all the time. the difference is one is above the throttle blades the other is below. > > then how much timing initial and total are you running? do you have a recurve kit in the distributer and last how much timing does the vacuum advance make? 15? 20? Running an edlebroke 1406 carb. THe vacum advance does run from the timed port. Total timing is 36 degrees I believe, but to be honest I’m not sure. It is set at whatever the chiltons manual tells you to set it at. No recurve, and not sure about the amount of advance. After reading through the carb manual I starting to thing I need to retune the carb. It seems like it is leaning out during what Edlebrock calls cruise mode. But on the other hand, I had a simialar issue before changing the carb, with the old quadrajunk. But then I know it was leaning out, so it may have been the same problem. And then you have neonracer, that has the 1403, that is jetted leaner from the factory, and he has had no problems that I know of. So i’m still lost…:doh: --- _[View the full topic](https://forums.speedlife.net/t/detonation/189438)._