Need a drivability tune on my car, any experienced tuners do this?

Thread Tools
 
Search this Thread
 
Old 07-04-2007, 07:01 PM
  #1  
TECH Fanatic
Thread Starter
iTrader: (17)
 
jimmypop13's Avatar
 
Join Date: Nov 2001
Location: SPRING, TX
Posts: 1,387
Likes: 0
Received 0 Likes on 0 Posts

Default Need a drivability tune on my car, any experienced tuners do this?

I had heads/cam/tune done at a shop but my car bucks insanely at 2k rpms and below. If anyone can help me out and get this car running good on the street, please send me a PM. thanks
-Chris
Old 07-04-2007, 07:17 PM
  #2  
TECH Fanatic
iTrader: (8)
 
SSilverSSurfer's Avatar
 
Join Date: Jul 2004
Location: College Station/Pasadena
Posts: 8,182
Likes: 0
Received 0 Likes on 0 Posts
Default

take it back to the shop and have them fix it. its what you paid for
Old 07-04-2007, 07:27 PM
  #3  
TECH Enthusiast
iTrader: (19)
 
96-speed's Avatar
 
Join Date: Jan 2002
Location: Houston, TX
Posts: 687
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by SSilverSSurfer
take it back to the shop and have them fix it. its what you paid for
A shop that charges for a "tune" should do so.

However, if they couldn't get it right on the first try I wouldn't give them a second chance. Pick up a copy of HPTuners, a wideband, and learn it for your self.

I know that's not what you wanted to hear but the fact is that no one can ever tune a car as good as you can.No one drives it all the time and can make the small changes necessary. Good luck

Ryan
Old 07-04-2007, 07:28 PM
  #4  
11 Second Club
iTrader: (118)
 
Havok2's Avatar
 
Join Date: Jan 2004
Location: RGV texas
Posts: 2,994
Likes: 0
Received 0 Likes on 0 Posts
Default

yup, you mentioned you paid for tune. take it back.
Old 07-04-2007, 07:45 PM
  #5  
TECH Fanatic
Thread Starter
iTrader: (17)
 
jimmypop13's Avatar
 
Join Date: Nov 2001
Location: SPRING, TX
Posts: 1,387
Likes: 0
Received 0 Likes on 0 Posts

Default

I'm scared if I try tuning myself, I will screw up my car though. It seems like a lot to learn and i don't even know where to start.

The shop said they couldn't get the bucking any better, i already talked to them.

Patrick G was saying it could almost be eliminated if someone spent a day with the car logging and tuning.

I guess I could get the HP Tuners or EFI Live but how do you learn how to use it?
Old 07-04-2007, 07:47 PM
  #6  
TECH Addict
iTrader: (28)
 
Cam72aro's Avatar
 
Join Date: Feb 2006
Location: Sugar Land, Tx
Posts: 2,137
Likes: 0
Received 1 Like on 1 Post

Default

Take it to HPE and they will take care of it for you.
Old 07-04-2007, 07:51 PM
  #7  
Launching!
iTrader: (31)
 
Rob's 02 SS's Avatar
 
Join Date: Sep 2006
Location: Mexico
Posts: 269
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by Cam72aro
Take it to HPE and they will take care of it for you.
Hpe is who tuned the car.
Old 07-04-2007, 07:52 PM
  #8  
TECH Fanatic
iTrader: (8)
 
SSilverSSurfer's Avatar
 
Join Date: Jul 2004
Location: College Station/Pasadena
Posts: 8,182
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Cam72aro
Take it to HPE and they will take care of it for you.
x1000000000000000000000000000000000000000000 0000000000000000000000
(i put that because the site wouldnt let me put any more smiley faces)
Old 07-04-2007, 07:56 PM
  #9  
((((((Administrator))))))
 
CRAGER's Avatar
 
Join Date: Nov 2001
Location: Houston, TX
Posts: 29,404
Received 0 Likes on 0 Posts
Default

Thats what big cams do, they buck. I don't see how you could tune it out.

I could be wrong, but I've never seen it not buck, unless your idle was around 1000rpm's and/or the cam was on a 114lsa or more.

Peace,
Craig.
Old 07-04-2007, 08:05 PM
  #10  
TECH Fanatic
Thread Starter
iTrader: (17)
 
jimmypop13's Avatar
 
Join Date: Nov 2001
Location: SPRING, TX
Posts: 1,387
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by CRAGER
Thats what big cams do, they buck. I don't see how you could tune it out.

I could be wrong, but I've never seen it not buck, unless your idle was around 1000rpm's and/or the cam was on a 114lsa or more.

Peace,
Craig.
my idle is at 1k. Bucking is the correct word, right? When I'm driving at a steady rpm below 2k, the car jumps back and forth as if i was bouncing my foot on the gas.
I'm not saying it was a bad tune or anything. Shops don't have time to drive around a car all day adjusting things. I'm just saying I've heard if you spend a lot of time playing with the tune, you can almost eliminate it.

I'm just wondering if it can really be fixed or if I should put in a smaller cam.

Last edited by jimmypop13; 07-04-2007 at 08:10 PM.
Old 07-04-2007, 08:17 PM
  #11  
TECH Fanatic
iTrader: (8)
 
SSilverSSurfer's Avatar
 
Join Date: Jul 2004
Location: College Station/Pasadena
Posts: 8,182
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by jimmypop13
my idle is at 1k. Bucking is the correct word, right? When I'm driving at a steady rpm below 2k, the car jumps back and forth as if i was bouncing my foot on the gas.
I'm not saying it was a bad tune or anything. Shops don't have time to drive around a car all day adjusting things. I'm just saying I've heard if you spend a lot of time playing with the tune, you can almost eliminate it.

I'm just wondering if it can really be fixed or if I should put in a smaller cam.
when i went speed density, it elminated most of it. my tuner spent a good amount of time on tune from drivebility to idle to wot. so it could have been that he worked a buncch of stufff out
Old 07-04-2007, 09:01 PM
  #12  
11 Second Club
iTrader: (118)
 
Havok2's Avatar
 
Join Date: Jan 2004
Location: RGV texas
Posts: 2,994
Likes: 0
Received 0 Likes on 0 Posts
Default

did you pay full price for tune? or half price=halfassed tune?
Old 07-04-2007, 09:46 PM
  #13  
TECH Apprentice
iTrader: (11)
 
LawHorn's Avatar
 
Join Date: Aug 2002
Location: La Porte, Tx
Posts: 317
Likes: 0
Received 0 Likes on 0 Posts

Default

whats the size of your cam? Got me worried now
Old 07-04-2007, 11:24 PM
  #14  
Moderator
iTrader: (19)
 
98Aggie's Avatar
 
Join Date: Jan 2004
Location: Mission Valley, TX
Posts: 2,241
Likes: 0
Received 0 Likes on 0 Posts

Default

Bring it to Victoria and get Patrick G to do it for you.
Old 07-04-2007, 11:54 PM
  #15  
TECH Fanatic
iTrader: (11)
 
mellowyellow's Avatar
 
Join Date: Dec 2004
Location: Dragging 408's
Posts: 1,790
Likes: 0
Received 0 Likes on 0 Posts

Default

Its called surging... And yes a good tuner can eliminate all of it ....I have a cam only car (244/248 612/615 114+4) and have zero...
Old 07-05-2007, 12:02 AM
  #16  
11 Second Club
iTrader: (10)
 
badride42's Avatar
 
Join Date: Apr 2004
Location: La Porte, Texas
Posts: 206
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by jimmypop13
my idle is at 1k. Bucking is the correct word, right? When I'm driving at a steady rpm below 2k, the car jumps back and forth as if i was bouncing my foot on the gas.
I'm not saying it was a bad tune or anything. Shops don't have time to drive around a car all day adjusting things. I'm just saying I've heard if you spend a lot of time playing with the tune, you can almost eliminate it.

I'm just wondering if it can really be fixed or if I should put in a smaller cam.
Mike at G-Force can tune it I have a .24x .24x .61x .615 and it drives below 2K all the time never a problem.. He fixed my car after HPE tuned it and I picked up .4 in the 1/4 and everyday drivability was improved.

Edit: this was my head cam motor, the 408 was tuned by G-force from the start.
Old 07-05-2007, 12:36 AM
  #17  
TECH Fanatic
Thread Starter
iTrader: (17)
 
jimmypop13's Avatar
 
Join Date: Nov 2001
Location: SPRING, TX
Posts: 1,387
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by 98Aggie
Bring it to Victoria and get Patrick G to do it for you.
that's what I want to do. I think he's pretty busy right now though.
Old 07-05-2007, 09:13 AM
  #18  
TECH Apprentice
iTrader: (4)
 
Ceissus's Avatar
 
Join Date: Feb 2007
Location: NW Houston
Posts: 335
Likes: 0
Received 0 Likes on 0 Posts
Default

Jimmypop...your cam isn't THAT big~ it's on the larger side but you shouldn't have ANY problems after a half decent tune.

i suggest you stay away from HPE tuning??(referring to post 7 and a personal friends account of their tuning)

and yes, tuning it yourself can be risky if you don't know what you're doing....
Old 07-05-2007, 10:46 AM
  #19  
Banned
iTrader: (9)
 
1320FEVER's Avatar
 
Join Date: Nov 2006
Location: Houston
Posts: 671
Likes: 0
Received 0 Likes on 0 Posts
Default

I am going through this on my 408. I drilled out the hole in the throttle body (start in 1 /32 increments) until my IAC position got down to around 80 deg. (It was as high as 170). You need tuning software to do this. Then let it idle until the STIT's find they're way back down to a reasonable level. It idles great now. And this is a 249/244 cammed 408. Don't let anyone tell you its normal, it is not and can be fixed.

+1 for taking it to G-force. I know for a fact that Mike knows how to do this. Heck, if he can get a 255/250 cam to idle...

Last edited by 1320FEVER; 07-05-2007 at 11:20 AM.
Old 07-05-2007, 12:10 PM
  #20  
10 Second Club
iTrader: (5)
 
WizeAss's Avatar
 
Join Date: Jul 2005
Location: by my computer
Posts: 2,958
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by jimmypop13
Shops don't have time to drive around a car all day adjusting things.
We have 2 shops here in Dallas area that do that. One tuned my car and the other is tuning my next setup.



All times are GMT -5. The time now is 09:20 AM.