[Her GT]

I added a BBK CAI and straight pipes on my 2005 GT. I bought a Diablo predator tuner with the BBK as well. I only got the BBK because Summit did not have K&N in stock when I was at the store.

Anyways, the tuner has some tunes programed but not one for the BBK. My check engine light did not come on yet. I am running it with 93 octane and did the 93 tune.

Should I take it to get tuned? Akron horsepower said they will do dyno runs but they do not know if they can tune it with the diablo, if not I will have to but one of theirs. They said they do not know if it will have enough customizable options. Has anybody used the Predator ? Will they be able to tune for it? I do not want to have to buy another one.
Also, I was gonna order the BBK throttle body. Should I get it then take it to be tuned, or will the throttle body throw it off if i put it on after the tune?

[stlwagon]

You are just fine running that 93 tune.

[Tillman Speed]

I found that BBK runs in the area of 7 percent off throughout the bottom end of the transfer function. So adaptive learning will kick in, and your fuel trims will keep everything correct. It's plenty within specs, so you won't see a check engine light. It's not "right", but it's not "wrong" either, so to speak. However, you need to dyno-check at WOT and see what it's like when it's not relying off of the o2 sensors, and its probably way off.

Keep your factory throttle body, and save yourself some money. The BBK gains are MINIMAL if you can even get it to work properly. We went through all of the steps in checking the voltage on the TPS and making sure it was within specs (I believe 1.19-1.31?) and they still kick into failsafe mode every once in a while. Those TB's are hit or miss. Don't worry about it until you're forced induction. You're better off buying charge motion delete plates.

If you're looking for a better tune for that thing. I have an AMAZING BBK tune that I can send you, and I guarantee you'll be happy with it. You would, however, need to purchase an X3 from us, because we don't support Diablo tuning. Your throttle response will be 1000000x better, the whole feel of the car will be insane compared to the "canned" Diablo stuff.

You'll be much happier, and you know your car will be running correctly. The most that someone could do with the Diablo would be to add fuel to WOT and get your WOT Air Fuel ratio correct (or close depending on how much it allows you to adjust), unless they have the custom tuning software.

Go with an SCT, you won't regret it. You have the best dealer support network in the industry, and unbeatable custom tuning available because of that!

Chris Rose
Tillman Speed, Inc.

[rwbrett]

I read the same "poor reviews" before I installed the BBK Throttle Body, so I did a before and after dyno pull when adding the BBK: the rwhp increased from 279 to 287 with just the addition of the throttle. The cross over was at 2750 rpm, i.e., below 2750 rpm there was less horsepower. There were no "engine lights" coming on after the install, but it was staying reved up between shifts, so we set the "dashpot function" to -0-, and it settled right down.

[Tillman Speed]

Originally Posted by rwbrett

I read the same "poor reviews" before I installed the BBK Throttle Body, so I did a before and after dyno pull when adding the BBK: the rwhp increased from 279 to 287 with just the addition of the throttle. The cross over was at 2750 rpm, i.e., below 2750 rpm there was less horsepower. There were no "engine lights" coming on after the install, but it was staying reved up between shifts, so we set the "dashpot function" to -0-, and it settled right down.

That's great! Like I said in the above post, they're hit or miss. I've had about 1 successful experience for every 5 or more bad experiences. I usually only see around 5RWHP increase peak, and about 4-5RWHP throughout the powerband with those, but it looks like you had some better luck. I would personally throw on some delete plates, and long tubes. That's alot of air moving, and the factory TB is good to around 500rwhp before it really becomes something neccessary to upgrade. If you got it done, and it works for you, thats good to know!

[Her GT]

Ok, well here is another question, If I buy the X3 from Tillman Speed, Can I tune mine back to stock so I can sell the Diablo and run it untill i get a new tuner? Can I run with out a tune for a little bit?

I would like to improve the throttle response. I noticed slight hesitation with the BBK.

[stlwagon]

Originally Posted by Her GT

Ok, well here is another question, If I buy the X3 from Tillman Speed, Can I tune mine back to stock so I can sell the Diablo and run it untill i get a new tuner? Can I run with out a tune for a little bit?

I would like to improve the throttle response. I noticed slight hesitation with the BBK.

Per BBK you can run that CAI without a tune. As long as you don't get a check engine light, you should be fine for the short-term.

[Tillman Speed]

Originally Posted by Her GT

Ok, well here is another question, If I buy the X3 from Tillman Speed, Can I tune mine back to stock so I can sell the Diablo and run it untill i get a new tuner? Can I run with out a tune for a little bit?

I would like to improve the throttle response. I noticed slight hesitation with the BBK.

You can run without a tune for a little bit, just make sure you use good fuel, and try and take it easy. It's WOT that the tune is off enough to do any damage. It would take a good amount of stompin on it to really do any damage, though so you'll be fine.

As far as for fuel trims... I've seen them 12-13% around 2-2.5 MAF voltage. That's VERY close to throwing a check engine light. It still will idle and part throttle around 14.64, so you won't know the difference. However, if there were to be an extreme difference in altitude or climate all of the sudden, you could throw a CEL and be 15-18% off.

Like stlwagon said, you're fine to run with it.

However, what I said still stands. That's how these companies can claim you dont need a tune. WOT air fuels could be 10% lean, and never throw a check engine light. And part throttle and idle fuel trims just need to be less than 15% lean or rich, and they won't throw a check engine light. Either way you're going to feel a performance gain by opening the air box up and leaning the car out a little. So the manufacturers are in the clear.

Go dyno the car with that intake without a tune. You'll be shocked.

Chris Rose
Tillman Speed, Inc.

[stlwagon]

Originally Posted by TillmanSpeed

You can run without a tune for a little bit, just make sure you use good fuel, and try and take it easy. It's WOT that the tune is off enough to do any damage. It would take a good amount of stompin on it to really do any damage, though so you'll be fine.

As far as for fuel trims... I've seen them 12-13% around 2-2.5 MAF voltage. That's VERY close to throwing a check engine light. It still will idle and part throttle around 14.64, so you won't know the difference. However, if there were to be an extreme difference in altitude or climate all of the sudden, you could throw a CEL and be 15-18% off.

Like stlwagon said, you're fine to run with it.

However, what I said still stands. That's how these companies can claim you dont need a tune. WOT air fuels could be 10% lean, and never throw a check engine light. And part throttle and idle fuel trims just need to be less than 15% lean or rich, and they won't throw a check engine light. Either way you're going to feel a performance gain by opening the air box up and leaning the car out a little. So the manufacturers are in the clear.

Go dyno the car with that intake without a tune. You'll be shocked.

Chris Rose
Tillman Speed, Inc.

What's your take on the BBK CAI? It get some bad press as not being as good as some of the other intakes (JLT, C&L, Demolet). I'm guessing it's due to BBK's rep on other parts (headers, throttle bodies).

[Tillman Speed]

Originally Posted by stlwagon

What's your take on the BBK CAI? It get some bad press as not being as good as some of the other intakes (JLT, C&L, Demolet). I'm guessing it's due to BBK's rep on other parts (headers, throttle bodies).

I dyno'd one the other day and it turned out within 1-2RWHP of every other result we come up with. I'm very impressed with it. I found it to have good power, the way it's constructed is nice. I'm a huge fan of plastic intakes over metal, but there weren't any issues at all with it. BBK shouldn't have any problem moving them.

Air flow and maf voltage was all good as well. No fluctuations. It's like they actually took the time to flow test them and all before mass production. Is this the same BBK?

CR

[stlwagon]

Originally Posted by TillmanSpeed

I dyno'd one the other day and it turned out within 1-2RWHP of every other result we come up with. I'm very impressed with it. I found it to have good power, the way it's constructed is nice. I'm a huge fan of plastic intakes over metal, but there weren't any issues at all with it. BBK shouldn't have any problem moving them.

Air flow and maf voltage was all good as well. No fluctuations. It's like they actually took the time to flow test them and all before mass production. Is this the same BBK?

CR

Interesting... I've run the C&L street, Powerhouse, and JLT II. Odd thing is I saw very little difference in IATs between the metal and plastic tube.

[Tillman Speed]

Depends on what kind of day, how long you drive it for, etc. Guys that have to drive their cars to the track and wait in line 40 minutes to make one run on a muggy 85 degree Friday night in the summer can tell you the difference. However for daily driving, the IAT's stay about the same usually. No big difference. Luckily the diameter of the intakes for the Mustangs are big enough to push alot of air through it, and don't heat soak very easily.

Chris Rose

[Her GT]

Well here is my issue, I don't think I will do too much more to car. I added the exhaust and the CAI and the 93 tune. I am running 93 in it now.

I find it silly to have spent 300 on just that tune. It would be different if i would continue to tune but I won't be doing any more under the hood for a while. ( I am buying a house)

I was debating tuning back to stock and returning the diablo but I am worried about running the BBK without it.

Should I keep the tune or maybe get one more customizable that shops will work with or should I just go with the K&N?

[hotshot]

K&N will probably be your safest CAI to run w/o a tune on the S197 because it increases the airflow by a smaller margin compared to the others. The reason a CAI like C&L or JLT needs a tune is to compensate for the dramatic increase in airflow. The K&N airflow increases slightly, so the stock tune is sufficient to compensate for it.

[topbliss]

Hey Chris, what do tou think of the airaid/roush intake? Seems to be built nice and the tube is plastic. I put on my father in laws 08 GT and it seems to run well. Its a no tune with the restrictor in..

Frank

Originally Posted by TillmanSpeed

I dyno'd one the other day and it turned out within 1-2RWHP of every other result we come up with. I'm very impressed with it. I found it to have good power, the way it's constructed is nice. I'm a huge fan of plastic intakes over metal, but there weren't any issues at all with it. BBK shouldn't have any problem moving them.

Air flow and maf voltage was all good as well. No fluctuations. It's like they actually took the time to flow test them and all before mass production. Is this the same BBK?

CR