right now my car is tuned on crome1.25 @10 psi. i have updated my crome to 1.45 and i put in my 4 bar map sensor. well i followed the xenocron crome write up to a tee. when i start my car the afr's are in the 10's runs for like 15 seconds then leans itself out and dies . Can some one point me in the right direction on what i need to do to fix this problem.

i have my old tune thats stock map. when i change the map sensor to a 4 bar from that same tune that was fine on the stock map it runs for 15 sec then i get a solid cell. what gives?

how can i fix these problems? i have 450 injectors.

 

Which 4 Bar are you using?

1st, make sure you are getting like 1.25 volts on your MAP SIGNAL wire with the K.O.E.Off

Changing from a stock Map tune and using Boost Tools to change to the 4 Bar sensor...it should run and stay running, but you may have to adjust fuel up or down though.

The reason it is rich for the first 10 seconds or so is the POST FUEL, once the POST FUEL additional fuel shuts off...you are leaning out and the engine is dying. Add fuel to the maps, lower your Post Fuel multiplier.

- Chris

 

Thx for the response chris.its a Motorola map sensor. i will try to play with this tomorrow. i want to get it straight so i can tune it. hopefully i can get a decent street tune done in time to go to the track. then i have to figure out my profec.


Modified by projectjazzmine at 10:07 AM 5/23/2008

 

hey whats are the specs on the 4 bars? anytone know?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jared50438 &raquo;</TD></TR><TR><TD CLASS="quote">hey whats are the specs on the 4 bars? anytone know?</TD></TR></TABLE>

If using crome with a hondata or omni 4 bar use the xenocron 4 bar settings which are actually settings for a motorolla 4 bar map sensor.

 

i will be using aem ems