PDA

View Full Version : SVO 42's


minytrker
August 19th, 2006, 05:31 PM
I just put in SVO 42's and thought everything was good. I real scaled them and started re-tuning my car since I had my heads done. When I start my car it blows alot of black smoke sometimes and when idling somtimes you can see a little black smoke come out, you can smell it and tell its from fuel. The WB is showing 14.6 a/f at idle at 800rpms with my 237/242 .603/.609 cam. When driving my car is drinking gas compared to before, I was at 30-31mpg and now its getting 24-26mpg. The only thing I changed were the injectors and had my heads worked. Anyone else have this problem?
ringram
August 19th, 2006, 06:54 PM
You can be running rich and still report 14.6:1 due to overlap etc.
Have you checked for air leaks in the exhaust etc? That will mess with your fueling in closed loop.

If not you can try leaning idle up while keeping the running smooth. See if that helps. If it does maybe do the same for off idle low load.
Bruce Melton
August 19th, 2006, 09:55 PM
I am also using SVO 42s and similiar cam, however I would be thrilled to get your NEW milage??
I used:

48.49827788 48.80053386 49.10092925 49.39949798 49.69627298 49.9912862 50.28456864 50.57615042 50.86606077 51.15432813 51.4409801 51.72604355 52.00954459 52.29150865 52.57196044 52.85092404 53.12842289

and it came out real close. I do not blow black smoke but the smell, catless, is just terrible.
What do your LTFTs -CL look like? At idle, per Ringman above, I would run lean.
TAQuickness
August 20th, 2006, 03:08 AM
that's ironic.

I just switched from a lean low RPM fueling (between 14.7-15.6 under 2400 rpm) to a rich fueling 13.98:1 and picked up 2 mpg. No shit.
dfe1
August 20th, 2006, 07:12 AM
that's ironic.

I just switched from a lean low RPM fueling (between 14.7-15.6 under 2400 rpm) to a rich fueling 13.98:1 and picked up 2 mpg. No shit.
Yes, but keep in mind that your combination is unique-- those of us wh don't have 5 muffler bearings and a quart of blinker fluid are operating at somewhat of a disadvantage.
TAQuickness
August 20th, 2006, 07:57 AM
Yes, but keep in mind that your combination is unique-- those of us wh don't have 5 muffler bearings and a quart of blinker fluid are operating at somewhat of a disadvantage.


Those do help but the RCPD's are what really set it off