My handy neighbor and I just installed the C&L cai and Motoblue U/D pulleys, with C&L predator 93 canned tune. Went well except one bee sting (I was under the car and could not run off screaming like a girl like I usually do).

Test drives have shown that the throttle lag is 80-90% gone, throttle is sooo much better. Car is snappier and clearly has more power.... BUT. I feel like i'm not getting all that I can out of it. I think if I knew more about the Predator and more about the data I could get more out of it by modifying the tune.

This car is an automatic and after the tune I still get no chirp when it shifts from 1st to 2nd (TCS off). I get no chirp if I am rolling along at 20 and I slam the gas. Its better now, but still not as good as it can be.

Have you raised your rev limiter? to 6500? it seems easy enough to do w the Predator but I didn't want to do anything that would be reckless.

How can I use the Predator to determine what my A/F ratio is?

I'm trying to log live data, but i'm having a hard time understanding what the data i'm logging MEANS. Can you give me specific advice on straightforward metrics that I can measure to help me determine what to tweak from here??? I should mention i'm a N00B to this- it may be obvious at this point :shock:

thanks in advance :worship:

 

I checked the settings on the rev limiter and its at 6496, so nevermind on that. But the rev limits on the shift points are set at a little less than 6000. Safe to raise?

 

Well, safety is a matter or controversy...I'll give you some tips I've picked up and they seem to be working well.

1. I have my rev limiter set at 7,000 rpm's. I shift at 6,500 but need the extra cushion for the Nitrous (don't want to bump the rev-limiter while spraying as it pulls fuel...very bad with Nitrous) Also when you adjust your rev-limiter make sure you adjust both settings by the same amount (default and other).

2. On data-logging: WOT spark is an important value to look at (total timing at WOT). 31-32 deg is good for naturally aspirated motor's. With a power adder you want that value lower. You can also monitor air intake temp's and water temp's, good stuff.

3. The Predator can not give you an A/F ratio per say. You would need to install a wide band monitor (there are some threads on this subject).

4. The most important thing I can recommend is to find yourself a good Diablosport "chipmaster revolution" tuner and have her custom dyno tuned. You will gain all your potential HP/Torque, make your throttle smooth as possible, ensure your A/F ratio's are safe, and make sure your car is happy... Well worth the money.

Hope this helps.

 

I have close to your setup. I raised the WOT shift to 6200 and set the limit at 6500.
Too bad you did not come here first and read all about the tuners. Seems the SCTX-2 and Lidio tunes work best with an automatic. I am thinking about ordering this and selling the Predator. Keep the OD turned off unless you are on the highway and you will get a lot more out of your floorings. Brake lock it at standing start and build the revs until it warms the tires a little then release the brake and firewall it.

 

Thanks guys for the info.
My spark adv was hitting 30-31 around 6000 rpms so I think that sounds about right.
I will try adjusting the WOT shift points and see if that gives it more snap.
I looked at what I can change in Modify custom tune and really don't know whether I need to go richer or leaner, thats the hard thing for me to figure out. I data logged the Long fuel trim (LFT1&2) but I don't understand what the data means, I guess I don't need to know what it means, what I need it to know whats the sweet spot whats the target data?
My local dyno is down for repairs but its my plan to hit it asap and make sure i get the A/F measured. As I understand it my target is 12.6 to 13.
I hear Lidio is the king, I also hear great things about the other premier SCT tuners like Doug. I don't know enough about it yet to have any regrets, but after a dyno and after I make adjustments, if I can't get it right I may make the switch to SCT. Its too early right now to jump ship.

 

Vegasjay, I looked at your sig and noticed that you mentioned that you advanced your timing 2.5%(global?). How do you know when you have advanced it to the sweet spot? what data do you measure to know what is your target point?

 

When I started Dyno tuning I was reading 28-29 deg at WOT. So we advanced the timing until we got to 32 deg. Now I'm starting all over on the dyno developing a nitrous safe tune... :bang:

 

I went out just now and adjusted my RPM shift points to 6200.
turned off my TCS, AC, and O/D and took off. It launches well but no chirp from 1st to 2nd. Actually if I floor it from a stop it does not chirp, if I roll at 20mph and then floor it I get no chirp.

I think I'm going to try to Richen it up and monitor spark adv at WOT and see how that works.

Thanks for the Predator clinic!

 

Brake lock it and build the revs until the tires just break loose, get off the brakes and on the gas. Try dropping your shift RPM just a little. You may be going the wrong direction with the fuel mix.

 

That can always be done, but its just a crazy feeling to floor it and have your tires spin. Heck, I have 20"s on my car and NO performance mods...sometimes when everything is right, I floor my car coming up a slight hill and i hit redline with tires spinning . Now if I could have that without being on a hill

 

I can always get it to spin if I power brake up to 1500+ rpms and then I let if go.

What i'd like to see is a burn out even with TCS on, and I got to that by doing the following: (keep in mind this is Automatic, w C&L tune modified)

1). I set the mph RPM limit to 6200 per advice from this forum
2). Richen fuel 2.5% on the higher rpm
3). Set the shift up +10 mph on the 1-2nd shift.

Last night I burned out at a yield sign with TCS on and just a tiny rev with the brake on. I now burn out if i'm at a complete stop with no brake- but not a long burnout.

I still don't get to much chirp from 1st to 2nd but i'm close!

 

Why oh why did U get an automatic???

I had two auto mustangs as a teen both 2000 anniversary edition i chirped all the time in them easy. My predator canned tune works great on the manual transmission 6 i have now. I Actually have to hold back on the throttle most of the time to avoid spinning tires, and if its raining, oh god. Cant wait for til i can afford all weather street performance treads (anyone know a good brand?). Anyways, not sure whats going on with your gt if you cant get it to spin tires, especially on a custom tune.

Maybe your gt suspension is so much better than the v6's and is designed to put more of that power directly to the road (not sure why u think spinning tires is a good thi other than it looks cool).