I was not able to take her out for a drive yesterday as I had too many other chores but I will take her out for some more "learning" today. Here is one article that discusses this: AutoSpeed - Tuning Air/Fuel Ratios I have not read the instructions deeply enough to see how you can set the target AFR for different operating situations. BTW, AFR at WOT should be in the mid 12's range, while at light cruise it ought to be in the 15-16 range (for best economy). Hopefully, the AFR gauge display is responsive. The heat issue on the ECU is a good observation, IMHO.Īnd as for AFR, I'd like to hear that too.
those are so loud I took one out of my rally car! And there are ones that work fine out of the tank. They are not at all like the old 80's-design Facet-style low pressure pump. TC, the roller type high pressure fuel pumps are quiet. Of course, you pay up front for all of this but it sure makes tuning easy-peasy. No more stopping, reading the plugs, changing jets, adjusting distributor springs and stops, and doing it over and over. I just realized that this thing is going to be popular in a certain way.3.5" touchscreen display and control. I snipped out a few lines here from TC's post. That is a great start OP, and thanks for posting the idea and the results! Have fun! Keep us posted!Ĭlick to expand. Does it stick close to 13.5:1 across up to WOT? Sounds like a winner so far. What style air filter works with this Sniper set up?įabulous information so far! I’m also curious as to what the AFR values look like at cruising vs acceleration vs WOT after it self tunes. I’m only adding this information in case the Sniper ECU does need to keep somewhat cool, if it’s an area of concern. This set up with the box style air filter is what I’m using. The cooling fan also directs ducted cool air from in front of the radiator right at the carburetor so it also receives cooler air for the intake. That seems to be an area only us CIH GT owners suffer from, not so much with the sedans & station wagons. I was getting 145- 185° at the carburetor body before with just the stock set up.
#Holley sniper efi what more do you need plus
I put a heat shield and a little ducted 200 cfm carb cooling fan under the hood on my GT along with a temperature probe on the carburetor, the carburetor body never reaches above 125 degrees, even on 100 plus degrees days! Usually it runs between 75-110 degrees depending on the temperature set point and ambient temperature, I should think that would be sufficient to keep the ECU happy. I imagine that they engineered the ECU to hold up to most under hood heat. With our fuel at the pumps seemingly having more additives that only our carburetors seem to mind it looks to be well worth the $$, if you you can get smooth stop & go in traffic response on the accelerator, (that was the only red flag thrown at this set up) then it sounds fine for our 1.9 & 2.0 CIH’s, I’ll bet your gas mileage improves too I love a product that has good tech support, this looks to be well covered there too. Everything else looks to be pretty straight forward. Those are the main areas that more information would be even more helpful. Is yours any louder than the low pressure fuel pump? If not and it stays cool enough then who cares if it’s not mounted in the tank. that you used would be nice only because they are supposed to be loud. Information on the fuel pump make, model etc. More pics of your fuel line routing? Your description was fine it would just be more icing on the cake. Man, what a fun toy to have! When you get around to it can you please post some more pictures of the throttle linkage with the camera a bit further out? It looks like you have a non Opel linkage rod that extends from the throttle body and looks longer than the stock one, was that extra or did it come with the kit? How did you get it to adapt to the ball & socket on the Opel linkage?
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