timing

[ViciousV6]

I'm currently running my Lubrant race chip with 26* timing. I have a Joe Tripodi dual stage alky kit. I run 22-23 psi w/ little to no knock on the shifts. Should I stick with this, or step down to 24* and up the boost a little? I'm thinking about having Testa burn me a new chip. I only ran the car on alky once. I ran 11.80@116 with Cam2 115, then ran a 12.0@113 with the alky and less boost. Problem with the alky run was that I didn't lock the converter. I think the times would have been identical if I would've. The car was running at least 1 less pound of boost, also. This setup seems to work well, but I'm wondering if it could be better with less timing and more boost. I suppose I should just get the chip and try, but I'd rather save the money if I can!!!

 

[YGETV8]

Well, I don't know what turbo you have, but the general consensus seems to be that stock turbos run out of steam at about 21-22 psi and then you can get more power with a little more timing. Whereas with bigger turbos (more efficient) you can lower the timing and run more boost and you'll make more power that way.

 

[ViciousV6]

Thanks for the reply, Jay. I'm currently running a PTE-44 w/ .63 exhaust housing. The 22-23psi I'm running pulls really hard, especially with 26* timing. I'm just wondering if there's any advantage to 24-25psi with 24* timing??? Just seems like a trade off, but I know the 44 isn't out of steam, by far.
Choices, choices!!!

 

[TurboTR]

>I'm just wondering if there's any advantage to 24-25psi with 24* timing???

Well IFF the 26 deg was the best timing at the current 22-23 psi boost level and IFF 24 deg is the best timing with 24-25 psi then yes, there should be a gain at 25 psi IMO.

Keep in mind that the nitrous timing retard rule of thumb is 2 deg retard per 50 hp. Comparing that to your situation as a very general guide, I doubt that raising boost 2 psi will get you 50 hp in this case, so taking out 2 deg for 2 psi boost may be a bit aggressive IMO.

TurboTR

 

[ViciousV6]

Very good points, TR. Perhaps I'll just order the chip and see what happens. I suppose you can never have too many chips!!