Ult. V9 doesn't work well w/ 3Bar

Dr.Evil

Dr.Evil

Addicted to Boost
I swaped in my ultimate today and it really gave my truck a nice boost. After wondering why it works good now and not before, I remember I didn't swap in the 3Bar MAP sensor. I have tried two different 3Bar sensors and both made the truck run poorly, (wouldn't idle, would throw a "running rich" code, I think it was 43) with or without the ultimate installed.

Is it safe to run the ultimate on low boost levels/timing with the 2Bar sensor? Also, anyone have an idea why it runs bad w/ the 3Bar?
 
Ian Turgeon

Ian Turgeon

Cascading Inspiration
Re: Ult. V9 doesn't work well w/ 3Bar

Something isnt right if a 3bar chip runs better on a 2 bar. A lot of fuel and timing calculations are based on the map readings, and it should run like poop. Are you sure you dont have them mixed up?
 
Dr.Evil

Dr.Evil

Addicted to Boost
Re: Ult. V9 doesn't work well w/ 3Bar

SyTyArchives said:
Something isnt right if a 3bar chip runs better on a 2 bar. A lot of fuel and timing calculations are based on the map readings, and it should run like poop. Are you sure you dont have them mixed up?
Click to expand...


Yea, I got a brand new MSD 3Bar chip directly from Summit. I also tried the 3Bar that the truck came with (uninstalled)
 
S

smeagol

Active member
Re: Ult. V9 doesn't work well w/ 3Bar

Something's goofy here. *NO* 3 bar calibration will work well with a 2 bar calibration, or vice versa.

What does the label on the eprom on your Ultimate read?
 
Dr.Evil

Dr.Evil

Addicted to Boost
Re: Ult. V9 doesn't work well w/ 3Bar

is has:

C3B16V, then it has something blacked out with a "11" below it.

Should the white numbers on the stock chip be facing up or down when connected to the ultimate? I tried it with them facing down and the truck ran poorly. With them facing up, it runs good.
 
Dr.Evil

Dr.Evil

Addicted to Boost
Re: Ult. V9 doesn't work well w/ 3Bar

Anyone know what this Ultimate is programed for? It seems that w/ this chip and the 2 bar sensor, it pulles pretty good between 5-10 PSI at half throttle, then it will sputter real bad for a second, like a bad backfire, then its fine. At first I though it was just the PCV vac line blowing off, but I hose clamped it and it did it again tonight, and no vac lines were off.

I will have a DM file tomorrow, hopefully I can finally figure out whats wrong w/ my Ty. :roll:
 
Dr.Evil

Dr.Evil

Addicted to Boost
Re: Ult. V9 doesn't work well w/ 3Bar

Dr.Evil said:
is has:

C3B16V, then it has something blacked out with a "11" below it.

Should the white numbers on the stock chip be facing up or down when connected to the ultimate? I tried it with them facing down and the truck ran poorly. With them facing up, it runs good.
Click to expand...


Anyone know what version/programming is on this ultimate?

Thanks
 
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