whats wrong with this DYNO run ???

[zohaer21]

hi
maybe this is not the best place to put up these questions but since the predator was used in this and you guys are better at judging a tune than me so here goes

let me state my mods : 2006 R/T road and track package
1)mopar CAI
2)mopar catbacks
3)predator r18 93 CAI tune
4)mopar long tube headers
this run was made yesterday (before and after tuning on the dyno)
the pre tune run got me 281 HP on a DYNODYNAMICS CHASIS dyno (uncorrected values) and the after AFR tuning got me to 289 HP (uncorrected)

now to me a stock R/T should should put down 270-280 RWHP stock while a car like mine with R&T package should (at stock) put down 297-305 HP at the wheel ... secondly the dyno run itself looks very small .. it starts late (on rpm range) steeps up quickly and end when the rpm range is 5000-5200
is that normal ? and how about the AFR ratio ? is it looking lean ? and lastly would you call this a good dyno tune ?????
plz feel free to comment and help me make this car run better , faster and safer !!! remember im in qatar and this is the only dyno here !!!
ps: other points the ambient temp was around 30 degrees , the old stock headers were in the boot of the car and the tuner and me both were in the car at the time of the run

[johan]

Looks lean, you want the 5.7L around 12.5ish.
It looks ok up top but you prolly want to add fuel in the lower rpm ranges. I would also log for any spark knock.
You could pull it higher in the rpm's but you already peaked in that run so really no need for it.

[zohaer21]

i did monitor the retards (sounds funny) .. the max total retard , total knock retard , lt and st retards
the only movements are on max total knock retard goes up and down continously and st retard which spikes upto 5 -6 then gradually goe down over 4-5 seconds.. no register in LT or total knock retards..
so should i change something (like add more fuel ) in any of the rps ranges ???
thanks

[johan]

yeah I would start by adding fuel in the lower rpm ranges, a/f up top is fine.

[mikel]

Question...what about the Road and Track package would make it show higher numbers than a regular 5.7?

[Mike_Levy]

They advertise it with a freer flowing exhaust and different PCM software, neither of which would have any effect at all since both have already been changed by him.

[mikel]

They advertise it with a freer flowing exhaust and different PCM software, neither of which would have any effect at all since both have already been changed by him.

Different PCM software huh?
Not.
Nice scam though....

[Cman]

They advertise it with a freer flowing exhaust and different PCM software, neither of which would have any effect at all since both have already been changed by him.

What is a PCM and how do you tell if it is changed? I am missing something here. I thought all Hemi cars were RT's. Thanks

[mikel]

The PCM is the computer in the car.

[Cman]

The PCM is the computer in the car.

Thank you but I didn't read where the guy asking about the dyno run had changed his. What am I missing?

[Mike_Levy]

Number 3. Predator tune, reprograms the PCM.

[Chrispy]

dyno Dynamics read lower than dynojet...Problem solved

[DerekBlk06RT]

the Base R/T is rated at 340 hp at the crank, the R/T with R&T package and the Daytona's are rated at 350hp due to a slightly freer flowing air intake and exhaust. that's the only difference between the 3 models.