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Discussion Starter #1
Thanks to James with Runnin' With The Devil, my car runs great.:hail:
I drove over to Mobile,AL today for Predator adjustment on the dyno.
He adjusted my A/F to about 12.8 across the board, tweaked the
timing, and found me some horses and lbs. Shift firmness was lessened
on the low end, and tightened up at WOT. After nine runs in 90 degree
plus weather and high humidity, 284 rwhp and 299 tq. @ 94 degree IAT.
James knows his stuff and is also very professional and courteous.
Kudos also to Pete and his dyno at Professional Engine Service. :)
 

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paco04 said:
Thanks to James with Runnin' With The Devil, my car runs great.:hail:
I drove over to Mobile,AL today for Predator adjustment on the dyno.
He adjusted my A/F to about 12.8 across the board, tweaked the
timing, and found me some horses and lbs. Shift firmness was lessened
on the low end, and tightened up at WOT. After nine runs in 90 degree
plus weather and high humidity, 284 rwhp and 299 tq. @ 94 degree IAT.
James knows his stuff and is also very professional and courteous.
Kudos also to Pete and his dyno at Professional Engine Service. :)

nice numbers. :)
 

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Master of Youngrushhour
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Looks good.

James PM'd me last week that he thought he could improve the basic perfomance tune. Sent him the file a few days ago - looking forward to the up date. Great having guys like this around.
 

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Discussion Starter #4
rushhour said:
Looks good.

James PM'd me last week that he thought he could improve the basic perfomance tune. Sent him the file a few days ago - looking forward to the up date. Great having guys like this around.
Yeah, I think the basic performance tune has some issues. If James
offers to do what he did to mine, do it. :secret:
 

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Discussion Starter #6
Just about 5000.
 

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Discussion Starter #8
The charts I have are only for the 8th and 9th run. The 8th, and final tune run was
8hp better and about 9lbs better in the 4400 to redline range. I don't have the
baseline chart, James has that. The 9th run was a restored tune (I'm not sure if
factory or original Predator performance tune). I don't have a scanner, but James
can probably send them to you.
Most of my driving is city light to light, so the milder partial throttle shifts are
welcome. They're still firmer, but don't kick as hard. But when you stand on it,
the beast appears.
 

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Master of Youngrushhour
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Just got my up dated file from James today. It looks like he used the data gleaned from the dyno run on paco04's car to set it up. I will put it in saturday when I have some time. Plus my son will be around to help me run/record the diagnostics that James wants me to do after the tune is set in.

This guy is great!

If you are going to buy the Predator - I think RWTD is the only way to go.
 

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I have attached paco04's dyno information so everyone can see what a true custom tune will do for the GTO. This GTO was stock, save for a CAI. This graph shows the stock GTO A4 tune compared to mine. I did NOT raise timing at all, except I optimized the IAT Timing Retard Table. I also optimized the fuel and disabled COT. When I attempted to raise the timing the car would respond with KR, and I'm talking with just 1 or 2 degrees more than stock. This was on 93 octane, too. The GTO's High Octane Timing Table is very well optimized from the factory. The fueling from the factory (GM) is RIDICULOUSLY lean in the lower rpms and too rich in the upper rpms. After a couple of pulls I had the a/f on rushhour's car at a perfect 12.8 straight across.



If you have any questions please feel free to ask.

Kind Regards,

James
 
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