Hi All - 1st post!
I've got an 08 GT with a C&L Street CAI and FRPP GTAs..I'm looking for a new tune. I've been running Brenspeeds 91 Tune for a few weeks now and I'm not satisfied. The 87 seems like my best option right now, can that even be right? Here's what I know of the 4 Brenspeed tunes I've used:
87 - Good low end feels much stronger than stock
91 - Original Tune was Solid above 3k, but lacking in the low rpms. I actually had them send me a second 91 tune because I was pinging above 4k. The new tune feels like a slug
93- Pings like crazy.
I have only run 93 with all 3 tunes so gas should not be the issue with the pinging. My question at this point is who to go to for a new tune? I'm a daily driver who would like more low end torque.. any suggestions? Back to Brenspeed for one more time? Bama? Tillman? VMP? Dyno Tune? Do I even go for another 93 octane tune or just a 91 since my current 93 pings real bad?
Any suggestions would be great!
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2008 GT
Hurst S/T, C&L Street (Brenspeed 91), FRPP GTAs, 18x9 Razors (275s all around)
I am running a Tillman's 89 performance tune and it works very well. Low end is nice and above 3000 it comes on stronger.
I also have a 91 street race tune that I have tried. The throttle response is very aggressive and it definitely goes in the upper rpm. I find it harder to drive smoothly in normal situations. So I am back to the 89 and am satisfied.
Frank
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2008 GT Premium, Vapor Metallic, 5-speed stick w/MGW, GT500 front end, spoiler and replica wheels. Sequentials, GTA's, FRPP M6066M463V8 Whipple - can't wipe the smile off my face.
Id get a dyno tune if possible. Canned tunes are generic tunes, but all mustangs are a little bit different, so they wont always fit perfect, or may not fit well at all as in your situation. Your car may have come lean out of the factory, so a generic tune meant for a car that runs more rich would push it too lean. Some shops are better than others with their canned tunes, but none of them are so bad to cause problems like that, especially on an almost stock car. Youll also be able to squeeze out a bit more power with a dyno tune.
A dyno tune would be the most accurate but really isn't needed at this point in your mods. Might want to give VMP Tuning Inc a look as well as Tillman and Bama.
I've got a similar setup as you, but I have Bama's 91 Performance and 91 Torque tune. With either tune it's alittle sluggish under 2500 rpm's but the power with the Torque tune seems to come on earlier, around 2500 rpm's versus 3200-3500. The Torque tune is designed for a little better mid-range power at a bit of sacrifice of top end. You might see if Tillman has something comparable.
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2007 GT - Grabber Orange, exterior appearance package, IUP, leather, 5 Spd stick, 3.55s, C and L Street CAI, BamaChips tune, Gen 2 qtr window louvers, Astra Hammond chin spoiler, Mac Pro-Chamber with cats, Saleen Heritage Spoiler, FRPP LCAs,
IMHO, suggest that you first try to determine the cause of the pinging problem with your current tunes.
If it pings during the heat of the day, then see if it also pings late at night when the ambient temp is cooler. If it does not ping at night, then heat is the cause.
If it pings at night, then make sure the CAI's heat shield is forming a good seal with the underside of the hood.
Make sure all of the CAI's connections are tight, and no excess air in being sucked in around them.
Make sure the rubber gasket is on the MAF sensor. Sometimes it sticks inside the stock air intake when the sensor is transferred to the CAI.
Clean off the MAF sensor with spray cleaner.
Try different brands of gas.
If none of the above helps, then dump a can of Seafoam into the gas tank immediately prior to a fill up. It will get rid of any carbon that may have built up inside the combustion chambers, and also clean out the injectors. I had a pinging problem on my 05 GT with only 17K miles on the clock, and Seafoam eliminated it after 200 miles of driving.
BTW, your 2nd 91 tune is sluggish probably because timing was pulled, and/or the A/F was richened.
I have a 91 tune from Evolution and torque at 4500 feels like a rocket! WOT is un-freaking-believable. That is mainly why I haven't done any more mods in the past year! I got the tune in 2007, have heard some response issues at Evolution lately? Could be under staffed or something.
Why the dissing of Brenspeed? I don't get this board... same guys claim Bren is tuner god who is worth an 8-hour drive in one thread, then recommend Tillman in another. What gives people?
Just to be clear. Brenspeed customer service has been excellent. I spoke with them several times and they did send me a new tune that does not ping...it just feels a but sluggish compared to the low end of the 87 tune and the all around of the 93 tune..which pings badly.
I'm not putting them down at all, just trying to get my pony running like I want and I'm thinking of comparing my current Brenspeed tune with another tune altogether.
Who knows..I may get another tune that's inferior to Brenspeeds..but maybe not.
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2008 GT
Hurst S/T, C&L Street (Brenspeed 91), FRPP GTAs, 18x9 Razors (275s all around)
hey ski tell me more about this ruber gasket on the maf sensor i have cleaned mine sevral times dont rember seeing a rubber gasket.is it suppose to be on the part that plugs in or on the sensor.thanks might be whats wroung with mine if mine is missing where can i get one at ford.
The gasket is a rectangular shaped piece of rubber that's located on the MAF sensor that bolts into the CAI. If it's not there, then check to see if it's stuck in the MAF sensor port on the CAI, or on the stock air intake.
2008 Mustang GT-Having Tune Problems. 
.thanks might be whats wroung with mine if mine is missing where can i get one at ford.
