2004 Cobra Pulley Question

The Black Cobra

New Member
Mar 31, 2005
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I just got the 2.80 SLP pulley, belt, and a SLP specific Diablosport Predator II tuner.
My question is: Do I half to take it to a dyno to dial it in, or will the tuner do the job for me?
I understand to get the absolute most performance a dyno may be nessessary,
but I just dont want to tear up anything by just using the tuner.
 
The Black Cobra said:
I just got the 2.80 SLP pulley, belt, and a SLP specific Diablosport Predator II tuner.
My question is: Do I half to take it to a dyno to dial it in, or will the tuner do the job for me?
I understand to get the absolute most performance a dyno may be necessary,
but I just dont want to tear up anything by just using the tuner.
Depends on if you like to gamble or not... you a gambling man?

You don't have to do anything, but personally I wouldn't be able to sleep at night without know for sure what my AFR is.

Who did you buy this stuff from?
Was this combo of parts bought as a kit, or something you threw together?
Do you have ANY other mods on the car right now? (CAI, C/B, Mid Pipe, Etc.)

Yes to get the absolute performance out of your mods you need to get the car on a dyno and have it fine tuned because no two cars respond exactly the same.

Again, I wouldn't be as worried about extracting the maximum potential from these mods as I would be ensuring the combination is safe and won't burn up the motor due to a lean AFR. The Predator tuner is a nice piece of equipment, but on a pullied & modified Cobra it should primarily be used as a device to transfer custom tunes from a professional into the ECM of the car.

U.M.
 
Benny said:
Predator pulley tune is pretty good out of the box. BUT I would have it dynoed. You could learn an extremely expensive lesson
The stock Predator pulley tune is designed for a 2.93, CAI & cat-back I believe. It's pretty conservative and safe enough to get you to a dyno to have it properly tuned. :p Benny is EXACTLY right... nothing like ENSURING everything is what it should be!

The Black Cobra is saying his Predator comes from SLP and I'm thinking it MAY come with a custom tune (not the stock built-in pulley tune) which may be specifically made for the mods shipped. :shrug:

That's why I asked him if this was a packaged deal and if he already had other mods on the car...

U.M.
 
I bought these parts from Summit racing separately, but they are the EXACT same ones from SLP's website. The predator comes with 4 SLP specific custom tunes. Here is an exerpt from the website:
Programmer, 2003-04 Cobra PCM Handheld 4-Stage SLP Custom Tuned DiabloSport II
This portable, easy-to-use unit allows you to fine-tune a wide range of computer-controlled powertrain functions for maximum power and drivability. Manipulate rev limiters; correct your speedometer for non-stock gear ratios and tire sizes; remove the factory top-speed governor; and more—all in minutes and at the touch of a button.
Designed specifically for 2003-2004 SVT Cobra applications, part #M27000 comes pre-programmed with a selection of ultra-hot SLP custom tunes:
Low-Boost 1 (use with stock pulley and MAF)
Low-Boost 2 (use with stock pulley and SLP MAF)
High-Boost 1 (use with SLP pulley and stock MAF)
High-Boost 2 (use with SLP pulley and SLP MAF)

The only pulley SLP sells on there website is the 2.80, so I think the tuner is programmed for it.

The only other mods I have are an SLP loud mouth cat back and K&N FIPK (just the cone filter, I am not going to change the MAF.
 
If I was you I would install the pulley and new belt, upload the tune, then get to a dyno ASAP WITHOUT getting into any boost and have your AFR checked. Our motors are just too valuable to risk it. You don't need to get a custom dyno tune, just do a pull or two to ensure the AFR is where it should be.

U.M.