I have only done 2 08s Mike and both dynoed low.
I believe I have another one later this week.
All the 06s i have done were in the 440-450 range stock.
So the engineers must have f'd with the tune on the 07's-08's. I wonder if cv joint breaking had anything to do with that? You know, they fattened the AFR, installed stronger cv joints and upped the TM. Sounds like the case because I haven't heard of any 07's-08's having this happen.
Am I reading this right you put the killer bee on and lost 18 RWHP? I just purchased one and I'm going to send it back if I have to tune it with a new intake.
Am I reading this right you put the killer bee on and lost 18 RWHP? I just purchased one and I'm going to send it back if I have to tune it with a new intake.
The 1st pull is stock, 2nd is a stock filter and a tune (+26 HP). 3rd pull is back to stock tune but with a Killer Bee (+10 HP over stock). 4th pull is Killer Bee and a Tom Tune ( +42 HP over stock tune/stock filter).
You don't have to tune it with the Killer Bee, but you only get 10 HP for your $500. Let's say you pay $400 for a tune and forget the filter, 26 HP gain.
$900 for the filter and a tune makes 42 HP. You do the math.
FWIW, that's within .73 HP of what my 08 makes with a Killer Bee and a Tom Tune.
The terms most often used in relation to Air-Fuel Ratio (AFR) are Fat and Lean. Fat simply means that there is more fuel in the mixture, lean means there is less fuel in the mixture. Putting more fuel in the mixture robs the car of some performance but also protects the engine from "burning up" components. Leaning out the AFR will help you gain performance, but there is a fine line between lean and too lean. FRC Tom is extremely knowledgable in what works for these engines and what does not.
A Tune is the tweaking of various computer characteristics in the engine computer system. Specialized software is required to modify the parameters in the engine control system. FRC Tom uses a package called HP Tuners to perform the tuning of the engine control system.
A tune like what is shown above is not a mail in tune, but rather a Dyno and road test tune of the car live and in person at a perfomrance shop. Depending on what modifications you have made to the engine of your car a mail order may or may not work. A mail order tune works best when a specific set of known mods have been added to a car. Generally speaking, however, it is always better to take your car to a reputable shop and have a known tuner put your car on the road and on the dyno to perform the tuning of the engine.
Tuned properly, you should suffer no longevity issues or engines problems, this only happens when tuners get too aggressive with their modifications to the engine control system.
If you have a stock 07 and the killer Bee intake, send a PM to FRC Tom, he may be able to provide a mail order tune for those mods that will allow you to get the most out of what you have.
FRC Tom is one of the best, I trust him implicitly, he has tuned my car several times.
Mark
An answer I have printed to keep. Thank you, I was wondering why there was such a large AF difference in the tunes pictured. As I do not have a dyno around me, if I ask TOm for a mail in tune, would a Predator be a god investment?
__________________
Move over Mansell:
"Racing is life ... everything else is just waiting.", Steve McQueen
An answer I have printed to keep. Thank you, I was wondering why there was such a large AF difference in the tunes pictured. As I do not have a dyno around me, if I ask TOm for a mail in tune, would a Predator be a god investment?
What I suggest is you purchase Hptuners software (that is if you have a laptop) from there I can send you a baseline tune via email and from there you can tweak it....................................
More than happy to walk you through..
What if we only have 91 octane (CA), is there any danger with a tune? Looks like the object is to tweak AFR to normalize at around 12 to 13 at WOT over the power band. That means "leaner" and less margin to detonation.
Does HPTuners work similar to LSEdit? And what is your opinion of Predator and the various other "black box" approaches to tuning? Most of us don't have access to a dyno, but I assume most tuners do, so is D-I-Y tuning even something to fool with?
AutoForums.com is the premier network of enthusiast-owned
enthusiast-operated automotive communities.
We operate more than 100 automotive forums where our users consult peers for shopping information and advice, and share
experiences and opinions as a community.
Linear Mode
