Tunning a STS Kit w/ Predator?
Has anybody used this on any turbo/SC set up and got the tune near perfect? I want to have a "safe" tune since i live in florida so does anybody have any numbers for timing/fuel?
THANKS
Well congrats on the STS Turbo; I'm looking to buy one in a few months. With the predator - I'm not sure if you'll be able to tune it well with that programmer itself. Did you get larger injectors? I don't think it can adjust the IFR (Injector Flow Rate) table. The main thing is your timing table has to be totally remapped, and taking 10% out of the WOT area won't do it. Your best bet with that programmer is having diablosport do one of the email tunes for you. I don't know if they can tune a turbo setup appropriately, but I would definitely ask. If not you are looking at getting a custom tune, or buying something like HP Tuners or LS1 Edit to get everything in line.
I wouldn't get into the boost until you back the timing off some. I think most people run about 20* max timing for starters and go from there. Quite a difference from 28* or so on a stock NA car. Also for a boosted car, I've heard around 11.5 to 1 AFR is ideal, but don't take my word as gospel. Although better to be overly rich then lean
Most people like to shoot for 12.8-13.0 to 1 AFR on an NA car just to put things in perspective. I tune LS1 cars and on average a 5% change to your PE will only be about .5 in your A/F Ratio.
I tuned a LS1 ATI supercharged Rx-7 before and it seem to like about 22-24 degrees of timing with 5lbs boost. It did have a very large FMIC too.
If your car is pretty much stock, your injectors should be fine with 5lbs boost, but you would be getting close to the limit. Next step would be to get SVO 30lb injectors....
Bill
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substantial mods. The only way it can even touch
most of the things in the PCM, is by the "custom
tune" process. Not as-delivered. You should take
the advice you've been getting.
AFR adjustment "allowed". Its spark curve cannot be detail
adjusted, only blanket changes, where for boost you would
probably want to take more care (let alone that 3 degrees
of spark pullout may not suffice, and when you "install
performance" it adds at least that much (so full subtract
only takes you back down to stock).
It's just not up to the job in most peoples' opinion. I bet
if you asked in the Forced Induction section you would
find few, or no people who've succeeed with that tool,
without a whole bunch of custom-tune hand holding.
Now, if PSL is what you consider convenient driving from
Delray Beach, the DiabloSport facility there can likely do
a dyno tune for you and then rig your Pred so it's centered
up for that result.
Jeremy, I will suggest these three options:
1. You do a Predator custom tune
2. You sell Predator and get HPT and we can go over it together
3. You pay for a dyno tune...probably same price as buying HPT
Let me know...

