Clemson Sports Car Club

This setup belongs to Tim who brought us his 08 Mustang GT for an SCT Tune on 93 octane.

Mods:
Edelbrock Supercharger (5psi pulley)
Bosch 41# injectors
70#/min MAF
Magnaflow Exhaust (w/ X pipe) (on stock headers)

The kit came with a Diablosport Tuner and a preloaded tune. He purchased one of our SCT units for custom tuning since the Dsport unit that came with the kit was not adjustable. We were really expecting to gain roughly 30 whp but we opened her up some more, despite the restrictive stock headers. For the record, customer plans on upgrading to long tube headers and retune. Maaaybe a 7psi pulley, upgraded MAF and GT500 fuel pumps down the road. Also, once the new headers go in, we'll be able to rev to 7k without having to worry about frying the catalytic converters.






This is the Chart with the smoothing at 5...
The red line is our tune. The blue line is the base tune that came with the kit.



This is the Chart with the smoothing at 0...


Click the picture for the Video!

Very nice. What do you think of Edelbrock's setup? I was very surprised by their announcement when they said they were going to do a supercharger for the 4.6

Only 5psi? Whats the point in spending big money on a blower for 5psi?

(07-10-2010 03:26 PM)stevebullitt Wrote: [ -> ] Very nice. What do you think of Edelbrock's setup? I was very surprised by their announcement when they said they were going to do a supercharger for the 4.6

The customer installed the kit himself, and he said that he has very limited mechanical abilities, leading me to believe that Edlebrock put together a very comprehensive kit. The fit and finish is very nice, and it has stock-like appearance. As a side note, the Edlebrock engine covers that came with the kit were made of cast aluminum, not plastic. I thought this was neat, and just shows the attention to detail this kit offers.

Another concern that Tim had was reliability, since he is still making payments on this car. The Edlebrock kit seems to meet all his requirements, and should be very gentle on the engine at only 5 psi.

(07-10-2010 05:37 PM)mdenz3 Wrote: [ -> ]Only 5psi? Whats the point in spending big money on a blower for 5psi?

421whp isn't enough reason? Mostly, Tim wanted reliable power, so 5 psi seemed to be the most "gentle" for his engine.

It should also be noted that this car has less than 5K miles on it.

The best part to me about having a big motor is that you don't have to push it to the limit to make great power out of it. My wimpy 2.3 needs 18 psi to make 400whp, so to me humming along at 5 psi at 420whp is a helluva sweet daily driver.

Nice job with the Tune guys, with the smoothing off it really tells the full picture of how much of an improvement you guys made. Lots of people forget that there is more to tuning than peak numbers!!!!

Scorke

Great work again Spent. With this setup, did you see any conservative values on timing and fuel to address potential lower octane use? I guess it goes without saying that this is likely the case as I've seen with many FI applications factory or direct bolt on will do this to ensure even some basic user error doesnt come back and bite them in the face. Any relative expectations on increased fuel economy from tuned to untuned. I'm sure it varies on the tune, but I'm just really wondering what's a reasonable range (% gas savings) that you could expect an untune/tuned car.

^^ Thank you. Most people are not aware of how smoothing plays a role but it's actually one of the most important factors when analyzing a chart. I'm glad you understand.

^ Thank you sir. I couldn't datalog with the Dsport unit that came with the kit, in fact it was practically useless, so I couldn't tell you exact ignition values although I'm sure they are on the conservative side as evident by the jagged lines on the low smoothing. You are right, they do this on purpose so it doesn't bite them in the butt, and their base maps are usually done with 91 octane. That's why there is always hidden room with every kit out there that comes with a pre-made tune. It just simply takes the right tools (dyno) to bring that power out safely and efficiently.

As far as gas savings, in the case of most OBD II vehicles, it usually doesn't make a difference since the stock 02 sensors generally do an excellent job of controlling fuel under cruising conditions.

On OBD I vehicles, on average I have seen anywhere from 10 to 35% fuel savings under cruising conditions. Just really depends on how bad the stock tune is. They generally don't do as well of a job controlling fuel under light throttle.

Nice work again.

My car needs boost
Who wants to donate a forged rotating assembly to the Tyler Needs Moar Power fund?

For those wondering about a/f ratios.

Here are the SAE numbers with a/f ratios.



Here's same chart but at a smoothing of 1.