[bottled2v]

So i was bored today, figured I'd go out and do some datalogs of my n/a tune and 125 tunes i have on my sniper special forces tuner.

well i the highest timing i saw on the n/a runs were 29* which i figured was ok. then put on the nitrous tune, went out and did a couple logs and the highest i saw was 28*!!! Now i was under the impression i should be more in the lower 20's on the nitrous tune. this really shocked me, is my n/a tune just lacking a bunch of timing? or is the nitrous tune really as unsafe as it seems.

also the iats for the n/a tune were 50* and the iats for the nitrous tune were 60* for what it's worth.

[laoutlaw01]

I would think the iat temps should be lower spraying . Don't take my word for it though as I'm new to the fuel injected scene.all I've ever had was carb setups(ol school).

[bottled2v]

i wasn't spraying at all, just datalogging the tune itself. they were both n/a runs just one was on my nitrous tune.

[laoutlaw01]

Oh ok, hmm beats me then ,I'm stumped. On a different note how do you like the sniper? ,I'm torn between getting it or the SCT pro racer package.

[bottled2v]

i would never buy another sniper. if i had to buy another tuner it'd be an sct from am with the bama tunes. this thing sucks especially for auto cars. when i try and set shift points on it the thing just shifts at totally different rpm's every time i'm in it. now with this issue too, deff go with sct man. I got this from my buddy for 50 bucks, too good of a deal for a tuner to pass up. but i wish i would have now.

[laoutlaw01]

Damn,well I gotta get something because I'm almost ready to do more than the previous owner did and I don't wanta go thru the hastle of trying to get this diablo chip reflashed.

[Shaun03GT]

Hmmm.... Im not sure. I thought with a 100 shot you need to back it off 1* 125 2* and 150 3*. Im not 100% sure, but I thought I read that somewhere.

[bottled2v]

anyone know what stock timing is? that'd help a lot in figuring out what it should be but i cant find that anywhere.

[Nitmare67]

Delta Force tuning is awesome but the sniper package really looks like its alot more than it is. Before you spend a bunch of money to upgrade to SCT purchase the commando package you can upgrade for less than the cost of an SCT handheld. You will have the same FULL tuning software that every dyno tuner uses. Thats all I use to tune cars. It has all the features of SCT or any other. The only limitation at that point will be your knowledge and that will come with time. You will be able to get your timing exactly like you want it though.

Send me your current N/A tune and I will modifiy it for nitrous. You can just run that until you get a dyno tune.... that is if you want help.

BTW the reason your timing is probably so high is because of the IAT. The ECU adds timing when colder IATs are detected. I usually disable these functions on all power adder cars. I only use the timing modifiers for hotter IAT temps.

[Nitmare67]

Also stock timing - well what people usually reference as far as max timing.... Is 21 degrees. Thats the spark borderline limit. Those values are then modified by several other functions. Realistically 19 degrees would work great for a 125 kit and be very safe. I used to run 20 degrees and 11.5 AFR but 19 has a little more added safety. Are you running a wet or dry kit?

[Nitmare67]

Factory Mustang GT spark borderline table.

[DickH]

ill straight trade you my sct x3 for your sniper. I intend on doing my own tuning for my 5.4 and planned on trying out the sniper.

[B's04gt]

Damn Nitmare you know your shit

[Nitmare67]

You cant do your own tuning with sniper special forces (which is what he has) you need sniper (its actually called Delta Force) Commando eddition. Special forces is a little better than your normal hand held. It has a few other features like part throttle timing, pats over ride and stuff like that. You need a full version software like SCT professional or delta force/sniper - commando

[DickH]

I was under the impression that I could buy the software separately for half the price of the comparable sct software.

[Nitmare67]

Which software? You can upgrade your special forces to commando for about 300 I believe. The full commando tuning package runs about 600 but that is comparable to SCT 1800 package. Its full all parameter access. Its the shit. You cant buy it used though or ever sell it. Its licensed to you only. The sniper special forces package can be sold no problem and used by anyone just like the guy above did. Check out rabbid stang on here. He is a delta force dealer. he will get you the best price.

I've used SCT and Delta Force. I prefer delta force and it has capability that SCT doesnt.

[Nitmare67]

Originally Posted by B's04gt Damn Nitmare you know your shit

Theres alot of people that know alot more! But I do alright usually lol

[NeverEnuff]

He does. But 29* is way too much NA. The 2V heads arent near as efficient as the 4v heads and 29* is the borderline for power...and 28* is too much on juice.

Nitmare....that table unless im too hammered shows alot of '50's....thats not a true Borderline Knock Table...unless you use the MBT as your true spark table. which would be backwards. I would max out my MBT and then use my BKT as my timing table...

enlighten me.

(no sarcasm at all)

[Nitmare67]

Its the spark borderline table. There really is 50 degrees of spark advance under some of those load settings. Thats where your fuel economy comes from.

There is also an MBT table and depending on the ECU and vehicle it will or will not be used. Many vehicles use both tables and default to the lower spark advance between the two tables. In those cases you will usually find the ECU follows the MBT table under part throttle settings and the spark borderline table under WOT settings. You will also find on GM and some others borderline spark table, knock table and MBT table. The MBT table is also used for torque calculation to determine how close the engine is running to spark for peak torque

[mrbigjeep]

my timing is around 25 on motor and 22 on spray for what its worth