Terrible Throttle Response after MODS

[Tommy V]

Can you describe in detail what you did when you installed springs and catback, just before the issue started?

Exactly their alot of evap components back wheir u were installing those springs,go back and check all ur lines and electrical connections.I really dont think the axle back is the issue.

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[CHAROLLS]

******UPDATE / RESPONSE AS PROMISED******

Okay guys, I'm back. Again, I apologize for the confusion; I take 100% responsibility for this, like I should. After proof reading everything I posted here, and in my other thread, I would be confused too, if I were in your guys' shoes. Hopefully my reputation here isn't too down-the-drain for any of my future posts or relationships with you guys here to be taken seriously.

I will describe in short, as ACCURATELY as possible, in chronological order, of my mods and issues.

1. Got springs/catback(stainless works) installed at shop.
-TERRIBLE throttle response under 3k RPM thereafter. So terrible that if you close your eyes, you'd think you'd be driving a truck with a Smart Car's engine.
2. Ordered JLT CAI / BAMA tune
-Reason for ordering: more HP / fixing throttle response

That's it. Other mods are irrelevant, i.e. black out pony grille, girlfriend mod, etc.

I thought ordering and installing an intake and tune would fix the problem, as the stock engine and stock tune accommodate best with the car being bone stock and without a larger exhaust. I would read here and there the positive responses people would give after installing the same mods I have currently installed on my car, which are to include BETTER throttle response than STOCK's.

As you guys know by now, an intake and tune did NOTHING for my car, so I went ahead and thought the intake and/or tune was at fault. I emailed bama for a 2nd tune, got it, installed it, and the results were the same - no changes. I emailed them AGAIN last Friday(if I remember correctly) and still have yet to receive a response.

To conclude:
-I thought it's common car-knowledge that adding a catback with a larger piping diameter would result in poor-er low-rpm throttle response. (so no problem here, I thought)
-I thought an intake/tune would fix it, but they did nothing (ah hah! I thought here's the problem!)

Thanks for your time, guys.

 

[foghat]

******UPDATE / RESPONSE AS PROMISED******

Okay guys, I'm back. Again, I apologize for the confusion; I take 100% responsibility for this, like I should. After proof reading everything I posted here, and in my other thread, I would be confused too, if I were in your guys' shoes. Hopefully my reputation here isn't too down-the-drain for any of my future posts or relationships with you guys here to be taken seriously.

I will describe in short, as ACCURATELY as possible, in chronological order, of my mods and issues.

1. Got springs/catback(stainless works) installed at shop.
-TERRIBLE throttle response under 3k RPM thereafter. So terrible that if you close your eyes, you'd think you'd be driving a truck with a Smart Car's engine.
2. Ordered JLT CAI / BAMA tune
-Reason for ordering: more HP / fixing throttle response

That's it. Other mods are irrelevant, i.e. black out pony grille, girlfriend mod, etc.

I thought ordering and installing an intake and tune would fix the problem, as the stock engine and stock tune accommodate best with the car being bone stock and without a larger exhaust. I would read here and there the positive responses people would give after installing the same mods I have currently installed on my car, which are to include BETTER throttle response than STOCK's.

As you guys know by now, an intake and tune did NOTHING for my car, so I went ahead and thought the intake and/or tune was at fault. I emailed bama for a 2nd tune, got it, installed it, and the results were the same - no changes. I emailed them AGAIN last Friday(if I remember correctly) and still have yet to receive a response.

To conclude:
-I thought it's common car-knowledge that adding a catback with a larger piping diameter would result in poor-er low-rpm throttle response. (so no problem here, I thought)
-I thought an intake/tune would fix it, but they did nothing (ah hah! I thought here's the problem!)

Thanks for your time, guys.

A catback should not give you issues like that. No need for a tune with a catback. I'm not sure how even a poor install (if it was one) would do that - but maybe.

I think you should get in touch with Bama and let them know the issue was there before any tune was loaded - they shouldn't be spinning their wheels on this, their tune is not the problem.

I'd take it back to the place you got the catback installed and let them look at it, as the catback is what caused the problem.

 

[CHAROLLS]

Foghat,

Thank you for your input. I emailed BAMA back and forth, and even spoke with two different reps on the phone. I was just told to "fill out the form online" and order again (free tunes for life through americanmuscle)

I'll be taking the car to the shop either this or next Saturday to get the professionals to check for any leaks where leaks are possible, any cracks where cracks are possible, etc. I'm going to have them take the whole catback system and inspect that as well.

I guess I'll have to hold off on ordering a LUND tune until I know for SURE the tune, and nothing else, is the problem.

><

 

[Need4Speed15]

Some friendly advice:

1. Take the JLT off, install the stock CAI then load the stock tune back in the car. See how the car drives.

2. Diagnose the problem if it still has the same symptoms...take the catback off and inspect the mufflers and pipes for obstructions. Check all the things that could have been touched when installing the springs. Heck, install the stock catback and see if its better.

You stated the car ran bad before you bought the tune and JLT. Something is wrong and its not normal...and adding a tune (from anyone) and JLT wont fix it!

 

[Need4Speed15]

1. Got springs/catback(stainless works) installed at shop.
-TERRIBLE throttle response under 3k RPM thereafter. So terrible that if you close your eyes, you'd think you'd be driving a truck with a Smart Car's engine.

Again, this is where your problems started....this is where I would start.

 

[CHAROLLS]

Need4Speed15, you're right.

I first thought the intake/tune was the issue, but I have to eliminate all confounding variables, like the ones you mentioned. Spot-on steps.

It's gonna be a busy Saturday. Or next. You all will be the first to hear updates as I go about taking steps to diagnosing this annoyance. I'll try to post a video over the weekend, here.

Good news is, my work made me move parking location to where I won't have to drive uphill to exit the lot. No-hill indoor parking lot =]

 

[foghat]

Foghat,

Thank you for your input. I emailed BAMA back and forth, and even spoke with two different reps on the phone. I was just told to "fill out the form online" and order again (free tunes for life through americanmuscle)

I'll be taking the car to the shop either this or next Saturday to get the professionals to check for any leaks where leaks are possible, any cracks where cracks are possible, etc. I'm going to have them take the whole catback system and inspect that as well.

I guess I'll have to hold off on ordering a LUND tune until I know for SURE the tune, and nothing else, is the problem.

><

I get that it is free tunes for life. But in your conversation with them did you tell them this was happening before the tune and intake?

The tune is likely not going to fix something that was happening prior to the tune and intake being installed. At this point it really feels like Bama is putting an effort in for no good reason.

 

[95cobby]

This might be a shot in the dark but is your MAF backwards?

 

[dubster99]

^^he said it began BEFORE his tune/jlt.

Take it to another shop to have it looked at, because clearly shop 1 doesn't know what they're doing.

A catback will NOT cause this issue. They had to touch something else to cause this. Still sounds like a vacuum problem to me.

I installed my own catback and didn't have anything you described. Springs as well. But they had to touch something else to cause this problem. Take it to the dealer if you have to.

 

[95cobby]

^^he said it began BEFORE his tune/jlt.

Yea my bad, just realized that. Beginning of thread was quite confusing.

 

[dubster99]

Trust me, I know...haha. Can't wait til my bama/jlt show up thursday. Then itll be injectors and e85 shortly.

 

[yellowstangatl]

Before you start pulling stuff off the car, do a datalog and try to get somebody to take a look at it. You might be able to track down the source of the problem that way. Btw Do you have a catch can?

 

[CHAROLLS]

Wow @ all the responses. TY!! =D

-Foghat, yes, I explained to Bama my situation. They told me to just "fill out to online form." The LAST person I spoke with...Justin? Andrew? I forget - he said he'll get to work RIGHT after we hang up the phone, and he did - received tune in email no more than an hour later.
-95Cobby, nope. I actually tried unplugging/starting car, then plugging/starting car. MAF is connected securely.
-dubster99, yes. That's the plan - to take it to a different shop. One reason I thought the catback would be a problem is because I modded my previous car, an '09 VW Rabbit with a 3in custom catback (lol) and experienced SAME throttle response issue as I do with my Mustang.
-smittybat, a datalog is probably the last thing I will do, to be honest with ya.

I will have a friend help me video record myself over the weekend explaining the situation and showing you my taco/speedometer as I step the gas, simultaneously.

to put it in words, it's like this: tap pedal....(absolute zero engine rev feel).......woom. ("woom" is the exhaust sound. not "VVVroom." intake does not make air-sucking noise when tapping GENEROUSLY the pedal, when it actually should be)

 

[anotherneon]

Wow @ all the responses. TY!! =D

-Foghat, yes, I explained to Bama my situation. They told me to just "fill out to online form." The LAST person I spoke with...Justin? Andrew? I forget - he said he'll get to work RIGHT after we hang up the phone, and he did - received tune in email no more than an hour later.
-95Cobby, nope. I actually tried unplugging/starting car, then plugging/starting car. MAF is connected securely.
-dubster99, yes. That's the plan - to take it to a different shop. One reason I thought the catback would be a problem is because I modded my previous car, an '09 VW Rabbit with a 3in custom catback (lol) and experienced SAME throttle response issue as I do with my Mustang.
-smittybat, a datalog is probably the last thing I will do, to be honest with ya.

I will have a friend help me video record myself over the weekend explaining the situation and showing you my taco/speedometer as I step the gas, simultaneously.

to put it in words, it's like this: tap pedal....(absolute zero engine rev feel).......woom. ("woom" is the exhaust sound. not "VVVroom." intake does not make air-sucking noise when tapping GENEROUSLY the pedal, when it actually should be)

You need to do more research before modding your car. I highly doubt that there is anything wrong with your car after installing a catback. There is nothing back there that would or could cause an issue. I think the louder sound of the exhaust is making you think the car should be going faster than it really is.

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