performance chip help
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Joined: Mar 2007
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performance chip help
I have 1985 TPI 4+3 Manual Transmission with Overdrive. I am trying to figure out bang for buck what will give me the best choice. I want to put a new chip in the car but im not sure if I should use a off the shelf or take it somewhere. if anyone has dyno sheets for stock vs off the shelf or custom chips.
I have a bbk 48 mm throttle body, flow master exhaust, flame thrower coil and module, k&n air filter,
all help would be great
thank you
I have a bbk 48 mm throttle body, flow master exhaust, flame thrower coil and module, k&n air filter,
all help would be great
thank you
Team Owner
Joined: Jul 2004
Posts: 28,331
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From: Hartford WI
4 ways to do this:
Off the shelf: SWAG. I turn on your fans sooner and life is good. Maybe a couple of harmless tweaks and call it a day
Guessing: You send me the specs, I send you the chip
Datalogging: You datalog, send them files and they write a chip and you datalog more till it is done.
Dyno tune: They put it on a dyno, tweak and tweak till there is nothing more to do then release it back to you.
I'd only consider the last 2. The rest, I save my money. You haven't really got a ton of mods so I doubt it would be worth it.
Off the shelf: SWAG. I turn on your fans sooner and life is good. Maybe a couple of harmless tweaks and call it a day
Guessing: You send me the specs, I send you the chip
Datalogging: You datalog, send them files and they write a chip and you datalog more till it is done.
Dyno tune: They put it on a dyno, tweak and tweak till there is nothing more to do then release it back to you.
I'd only consider the last 2. The rest, I save my money. You haven't really got a ton of mods so I doubt it would be worth it.
Heel & Toe
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Last edited by Z51breeder; Dec 15, 2014 at 01:22 PM.
Team Owner
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From: Hartford WI
Thats not a chip, thats a resistor meant to trick the IAT sensor. Read this article , you will see that Chips work great in a TPI or LT1 car. Read this, http://www.superchevy.com/how-to/040...tchip-install/
Team Owner
Joined: Aug 2004
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From: Park City Utah
Thats not a chip, thats a resistor meant to trick the IAT sensor. Read this article , you will see that Chips work great in a TPI or LT1 car. Read this, http://www.superchevy.com/how-to/040...tchip-install/
I know what is in the video, and I know what it doesn't do. I know what an off-the-shelf chip is too, and I also know what they don't do. For the purposes of this discussion the video is relevant. It has become nearly universally understood that at best, an off-the-shelf chip WON'T slow you down, in an L83, L98, or LT1.
Last edited by Tom400CFI; Dec 15, 2014 at 03:29 PM.
Team Owner
Joined: Jul 2004
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From: Hartford WI
^Actually, it's not even that. Did you watch the vid??
I know what is in the video, and I know what it doesn't do. I know what an off-the-shelf chip is too, and I also know what they don't do. For the purposes of this discussion the video is relevant. It has become nearly universally understood that at best, an off-the-shelf chip WON'T slow you down, in an L83, L98, or LT1.
I know what is in the video, and I know what it doesn't do. I know what an off-the-shelf chip is too, and I also know what they don't do. For the purposes of this discussion the video is relevant. It has become nearly universally understood that at best, an off-the-shelf chip WON'T slow you down, in an L83, L98, or LT1.
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Drifting
Joined: May 2013
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From: Reno Nevada
I put together a 3 paragraph response to this thread and it didn't upload. You're response to store bought is correct, but custom is only as good as information received from buyer. Dumb answers equal dumb chip, and dyno tune is fine if you're racing on a dyno.
Team Owner
Joined: Jul 2004
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From: Hartford WI
Even datalogging at WOT is a risk. Buddy got pulled over for "unnecessary acceleration" or something since he did NOT exceed the speed limit. 4 pointer. When John Lingenfelter tuned my car, he had monitoring equipment and an assistant while he drove in the city. I suspect they gave him a pass or he'd have more tickets than trophies. He was outside his shop when he hit the gas hard and did a burnout. When I asked what he was trying to do, he said he just wanted to see what it would do. Not that I cared. Just curious.
Team Owner
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From: Park City Utah
Thread Starter
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on my car i have the electronic distributor with out vacuum advance. correct me if i am wrong but there is no way to adjust that timing with out going threw the chip. from the way it was explained to me was the chip took care of the advance curve.
Team Owner
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From: Hartford WI
Yes, what they are talking about is setting the base timing from say 6 to 8. I'm not a big fan of those kinds of tweaks myself and prefer to get it done thru the chip instead of the "redneck hacks" like that but you can.
Team Owner
Joined: Aug 2004
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From: Park City Utah
In the context of 'Hypertech' chips et al, Id hardly call base timing changes "Red neck". It gets results, which is more than you can say for the chip. That it costs $0.00 makes you look smarter than a red nek.
Drifting
Joined: May 2013
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From: Reno Nevada
Agreed, and to expound I'll say this. The 85 uses a computer controlled spark map with about 250 different cells based on load and rpm. Stock base timing is 6 degrees, and any change is a global change. Example, under load at WOT above 3000 rpm you're at 30 plus 6 for 36 total. Change base to 10 and you're at 40 with an imaginary gain.
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,214
From: Park City Utah
Agreed, and to expound I'll say this. The 85 uses a computer controlled spark map with about 250 different cells based on load and rpm. Stock base timing is 6 degrees, and any change is a global change. Example, under load at WOT above 3000 rpm you're at 30 plus 6 for 36 total. Change base to 10 and you're at 40 with an imaginary gain.
But if a global timing change yields an objective improvement...What will these...
...do? Nothing.
Drifting
Joined: May 2013
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From: Reno Nevada
I don't do 85, because it uses an outdated 2732 chip. If you mod the car much it is always advised to repin it to the newer 1227165 ecm from the 86 to 89 model cars. If you have properly set devices your stock car will run just fine other than primary fan doesn't come on until 226F.