Me VS. pullied cobra
If it is HPFP, you'll see a "flaring" of IDCs in the low to mid RPM range that recovers as the RPMs climb up. This is what I saw in the log.
If it is LPFP, you'll usually see a lean-out condition at high RPM.
It seems to come down to individual cars - I've seen some cars have HPFP issues on gasoline (usually Kappas running 25psi+).
Its still a street tune though. I would like to see a cobalt on the dyno having the AFR increased a little at a time to see where the peak is before it stops gaining power. An afr of 14:1 is very lean and seems to be pretty risky at WOT.
Not questioning his abilities, just curious to see for myself as our cars are similar but what works for the cobalt (as of right now) does not work for the speed when it comes to tuning...
Not questioning his abilities, just curious to see for myself as our cars are similar but what works for the cobalt (as of right now) does not work for the speed when it comes to tuning...
Different head design and different piston design. To my knowledge, the LNF head combustion chamber and the piston design are responsible for the proper mixing of the fuel where as the MZR DI utilizes charge motion valves. I also believe the MZR DI also has higher compression as well.
I myself personally run .88 at the richest point and .90 at the leanest on 1:1
You cannot compare the two, LNF vs MZR DI, and their fueling requirements, IMO.
Different head design and different piston design. To my knowledge, the LNF head combustion chamber and the piston design are responsible for the proper mixing of the fuel where as the MZR DI utilizes charge motion valves. I also believe the MZR DI also has higher compression as well.
I myself personally run .88 at the richest point and .90 at the leanest on 1:1
Different head design and different piston design. To my knowledge, the LNF head combustion chamber and the piston design are responsible for the proper mixing of the fuel where as the MZR DI utilizes charge motion valves. I also believe the MZR DI also has higher compression as well.
I myself personally run .88 at the richest point and .90 at the leanest on 1:1
I know they are different but I wasn't sure in what areas (besides the obvious). So far in my quest to run e85 with the speed3 I haven't turned up very promising results. I'm also running wmi and I think that it takes me to the same point that e85 can take my car. So running both is pointless... I've got some dyno time coming up in July and I'll see for sure then if there is any benifit in running e85 on top of wmi.
Just takes time and money...
It's pretty easy for someone young to get cocky about their car when they throw $1500 in their car and make 450+whp. I wonder if this guy is on the SVT forums, I'll let you know if he posts up about this.
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