I am not impressed with my Predator
Thread Starter
Launching!
Joined: Jun 2003
Posts: 200
Likes: 0
From: Thousand Oaks, Ca
I am not impressed with my Predator First thing is it caused a low RPM knock under light throttle. I know it is supposed to only affect WOT. But it DID do something to part throttle. I changed the spark plugs to NKGs from the AC Delco Platnicraps and it had no affect. I took out the program and no more knocking.....at all. Next, no matter what, I could not get the tire chirp on the 1-2 shift. Put both line pressure and shift speed at +25%. It shifted firmer.....but nothing like my old 95 LT1 Formula with the performance shift button on. (that sucker would fishtale going into 2nd). Lastly, it seemed to kill a little from my top end. I am not saying it is crap at all, I just felt I should have gotten more from it. I feel my car is faster without it. 
You know its kinda like LS1Edit. You put in a tune, wait a few miles for the computer to relearn some paramters, then log or monitor some data...like LTFTs etc.. Then, after that you make a few small changes, and repeat the drive about 30miles or so, log etc...if your not doing that than you will never be satisfied. Next, if you get to a point where the WOT parameters you can adjust are not what you need, lets say your Shift firmness isnt up to speed, or you need more fuel PT, or timing reduced under idle etc...then you give your vendor an email and he will write a tune, email it back and you download and install....you can do the same thing with Edit. And like I said, if you rush it and not give the PCM a chance to relearn, than you are the one needing tuned.
Good luck.
Charlie.
Good luck.
Charlie.
Thread Starter
Launching!
Joined: Jun 2003
Posts: 200
Likes: 0
From: Thousand Oaks, Ca
Yeah, well. I am going to just go with the Z06 cam and other stuff I have listed and leave the computer alone. 360-370 rwhp is enough for me. I will hold on to it so when the cam is done maybe the shop can use it for tuning. If not........EBAY 
BTW. I allowed 3 days between uploads.
BTW. I allowed 3 days between uploads.
Have you gotten with your vendor yet? Have you sent the vendor your data, like what your LTFTs are at Part Throttle, your O2s at WOT, if you have KR issues, where in the RPM band????Have you? If not, then instead of getting on here ******* a product, do what your supposed to and send that info in, get your car custom tuned, and then give your opinion of it. I believe I have enough experience with the Diablo Predator to say that it is more than capable of tuning a HC car and Nitrous. SC or turbo, not sure, But probably. if you had edit right now you would probably be buying a new PCM. Or you would simply take it to a tuner, have it tuned and when you complained, take it back have it retuned. Trust me, the Predator is good tuning tool, maybe its not for you, but that doesnt make it a lost cause.
Charlie.
Charlie.
On The Tree
Joined: Dec 2003
Posts: 196
Likes: 0
From: Tulare,CA.
Ok "Twenty",it is just like "Cat3" put it, you have to run the car 30-50 miles stop and go,highway,etc.(longer, the better),to let it "learn" other parameters( I done the EXACT same thing as you when I got mine,learn real quick that with ANY add-ons""such as your Magnaflow and FIPK" that the "standard" program is not enough!If you bought it from R.W.T.D.,then get with JAMES,and he will steer you in the right direction with a "custom" tune.My LTFT's were all over the place when I got the "Predator",could not figure it out till James steered me towards the mass-air being defective,after replacing it,took couple days for everthing to "level" out,now he can "tune" with a ''GOOD" sensor!All in all he made the car run better than it ever had,even with a "Bad" sensor!So be patient and "work" with it a while before you give up on it,you WILL NOT be disappointed!!
Trending Topics
Predator uses the PE (Power Enrichment) "handle" to
adjust WOT mixture, but this does not affect WOT
alone. PE affects part of the closed-loop map as
well (any place you have high manifold pressure,
basically, which includes part-throttle @ low RPM.
But, closed loop learning will override the PE's new
contribution to these cells' mixture and learn them
back to stoich over time. This may be useful (if you
had so lean a setup that you were having positive
LTFTs, this might settle that problem). Meanwhile
if you did not have a setup where you had a slightly
rich mixture, your LTFTs' decline and the new PE
increase are duking it out.
You should use the real-time display to get yourself
a better idea of what's up. Judge whether it's really
too rich (WOT) by whether O2s are above 920mV.
Judge whether the "main metering" is true by the
mid-throttle LTFTs. Fix your cooling fans turnon
temp and you might get that extra bit of spark
tolerance (maybe change plugs too).
By way of reference, my '02 likes +10% spark and
+2% - +3% PE, and with the trans shift params
set to +20% pressure and -20% adaptation time
would spin the stock Goodyears into 2nd - before
converter change.
Taller wheels would make this more difficult, as would
superior rubber. The old '95 was on, what, skinny
16s?
adjust WOT mixture, but this does not affect WOT
alone. PE affects part of the closed-loop map as
well (any place you have high manifold pressure,
basically, which includes part-throttle @ low RPM.
But, closed loop learning will override the PE's new
contribution to these cells' mixture and learn them
back to stoich over time. This may be useful (if you
had so lean a setup that you were having positive
LTFTs, this might settle that problem). Meanwhile
if you did not have a setup where you had a slightly
rich mixture, your LTFTs' decline and the new PE
increase are duking it out.
You should use the real-time display to get yourself
a better idea of what's up. Judge whether it's really
too rich (WOT) by whether O2s are above 920mV.
Judge whether the "main metering" is true by the
mid-throttle LTFTs. Fix your cooling fans turnon
temp and you might get that extra bit of spark
tolerance (maybe change plugs too).
By way of reference, my '02 likes +10% spark and
+2% - +3% PE, and with the trans shift params
set to +20% pressure and -20% adaptation time
would spin the stock Goodyears into 2nd - before
converter change.
Taller wheels would make this more difficult, as would
superior rubber. The old '95 was on, what, skinny
16s?
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Launching!
Joined: Jun 2003
Posts: 200
Likes: 0
From: Thousand Oaks, Ca
Originally Posted by jimmyblue
Predator uses the PE (Power Enrichment) "handle" to
adjust WOT mixture, but this does not affect WOT
alone. PE affects part of the closed-loop map as
well (any place you have high manifold pressure,
basically, which includes part-throttle @ low RPM.
But, closed loop learning will override the PE's new
contribution to these cells' mixture and learn them
back to stoich over time. This may be useful (if you
had so lean a setup that you were having positive
LTFTs, this might settle that problem). Meanwhile
if you did not have a setup where you had a slightly
rich mixture, your LTFTs' decline and the new PE
increase are duking it out.
You should use the real-time display to get yourself
a better idea of what's up. Judge whether it's really
too rich (WOT) by whether O2s are above 920mV.
Judge whether the "main metering" is true by the
mid-throttle LTFTs. Fix your cooling fans turnon
temp and you might get that extra bit of spark
tolerance (maybe change plugs too).
By way of reference, my '02 likes +10% spark and
+2% - +3% PE, and with the trans shift params
set to +20% pressure and -20% adaptation time
would spin the stock Goodyears into 2nd - before
converter change.
Taller wheels would make this more difficult, as would
superior rubber. The old '95 was on, what, skinny
16s?
adjust WOT mixture, but this does not affect WOT
alone. PE affects part of the closed-loop map as
well (any place you have high manifold pressure,
basically, which includes part-throttle @ low RPM.
But, closed loop learning will override the PE's new
contribution to these cells' mixture and learn them
back to stoich over time. This may be useful (if you
had so lean a setup that you were having positive
LTFTs, this might settle that problem). Meanwhile
if you did not have a setup where you had a slightly
rich mixture, your LTFTs' decline and the new PE
increase are duking it out.
You should use the real-time display to get yourself
a better idea of what's up. Judge whether it's really
too rich (WOT) by whether O2s are above 920mV.
Judge whether the "main metering" is true by the
mid-throttle LTFTs. Fix your cooling fans turnon
temp and you might get that extra bit of spark
tolerance (maybe change plugs too).
By way of reference, my '02 likes +10% spark and
+2% - +3% PE, and with the trans shift params
set to +20% pressure and -20% adaptation time
would spin the stock Goodyears into 2nd - before
converter change.
Taller wheels would make this more difficult, as would
superior rubber. The old '95 was on, what, skinny
16s?
You bring up a point. My '95 did have 275/40/17 on there, but they were Pep Boys Futuras, which are the worst tires on earth. Now on my '02 Z28 I have Perelli PZeros, which stick like fly paper. And to the rest, I am not really ******* the Predator, I am holdng on to it. I feel there is more to it I do not understand and in capable hands, it will do some good. I am sure I am ******* up somewhere.
