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  #1  
Old 01-22-2010, 12:37 AM
Sasquatch Sasquatch is offline
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Default Whats the max mods you can do to your motor before getting a tune?

Just wondering what would be the limit on motor mods before i have to get a tune?
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  #2  
Old 01-22-2010, 02:17 AM
Fx4wannabe01 Fx4wannabe01 is offline
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Doesn't matter...the Tune is written for your truck and it's mods. There's guys running full on built blocks putting 300hp NA to the ground, then the supercharger on top of it. It doesn't matter. But you should have at least intake and exhaust as a tuner makes those mods alot more receptive to the truck.
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Old 01-22-2010, 08:51 AM
Jp7 Jp7 is offline
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Doesn't matter...the Tune is written for your truck and it's mods. There's guys running full on built blocks putting 300hp NA to the ground, then the supercharger on top of it. It doesn't matter. But you should have at least intake and exhaust as a tuner makes those mods alot more receptive to the truck.

I totally disagree. Tuning with every change to VE is important because fuel and timing make a bigger difference than any other bolt-on. The question should be, "why do you not want to tune it". OEM calibrations are done so that even in the worst build, the motor will be knock free, and reliable. Factories do not use individual dyno calibrations.
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Old 01-22-2010, 10:44 AM
FX4 FX4 is offline
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Originally Posted by Jp7 View Post
I totally disagree. Tuning with every change to VE is important because fuel and timing make a bigger difference than any other bolt-on. The question should be, "why do you not want to tune it". OEM calibrations are done so that even in the worst build, the motor will be knock free, and reliable. Factories do not use individual dyno calibrations.
I kind of have to agree with this, but basically it comes down to this... how much money you want to spend, and how much do you care that the mods you put on work to their maximum benefit. Ideally you would want to tune after changing anything. You can get away with adding a CAI, exhaust, headers, and even a supercharger on a stock motor, but (in case of the CAI and exhaust) you will not see their full benefits without a real dyno tune for the truck, as all of those mods change the A/F in your engine and your ECU responds and adjusts accordingly (not always in a good way, as it can start pulling timing and such and you actually lose HP while your butt dyno makes you smile).

It is not cost effective for companies to tune each truck individually so they place an ECU with the same tune in it in every truck. These tunes maximize MPG and create a safety net for the engine, like stated above, at various conditions. This is also why it is not beneficial in any way to run 93+ octane fuel in our trucks.... our trucks are not tuned for it so it will not increase HP or anything like that in anyway.

You can gain a good amount of HP (10-20 hp in some cases) through just a dyno tune and no mods. As your fuel pressure, A/F, timing, shift points, etc can all be adjusted for your truck and your truck only to maximize HP and MPG.

Hope this helped a bit...

Rafal
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Old 01-22-2010, 11:57 AM
Jp7 Jp7 is offline
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You can gain a good amount of HP (10-20 hp in some cases) through just a dyno tune and no mods.

Rafal
Good point - I score 35~ usually with no knock.
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I'm dying to see this at night. Someone go tell the sun to give up already.
Quote:
Originally Posted by beef08 View Post
Your the man, you bring our dreams to a reality within the lighting spectrum
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Jp7 you always do AMAZING work! Hats off to you sir
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People so often confuse "hating" with "knowing better".
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  #6  
Old 01-22-2010, 12:38 PM
Pro Induction Pro Induction is offline
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To get best fuel and air mix and everything to be puttin out what the motor needs you need a tune.. you can get your comp flashed for your mods and put down the best hp... i got mine flashed when i had just the bottle on it and could tell alot of diff
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Old 01-22-2010, 03:55 PM
Jp7 Jp7 is offline
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To get best fuel and air mix and everything to be puttin out what the motor needs you need a tune.. you can get your comp flashed for your mods and put down the best hp... i got mine flashed when i had just the bottle on it and could tell alot of diff
Adding nitrous requires so much more fuel that without upgrading your fuel system your just asking for trouble.

Every engine is different. MAF's are different. Some MAF's react different to certain parts than the different car with the same parts. To tune it right you need to LOG what is going on. Thats why you should have a wideband, knock sensor, tactrix cable and laptop before you try any of this. Generic flashes for specific parts are not a very good way of running the business.
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I'm dying to see this at night. Someone go tell the sun to give up already.
Quote:
Originally Posted by beef08 View Post
Your the man, you bring our dreams to a reality within the lighting spectrum
Quote:
Originally Posted by BCobe View Post
Jp7 you always do AMAZING work! Hats off to you sir
Quote:
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People so often confuse "hating" with "knowing better".
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  #8  
Old 01-22-2010, 05:07 PM
Fx4wannabe01 Fx4wannabe01 is offline
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uhh....for whats it's worth, I'm fairly certain most of us here aren't going to be dyno tuning with a laptop next to us to get every tenth of horsepower out of our engine and doing our own tuning and writing our own tunes....

We're getting ballpark formulas written for us and our vehicles because that's what's available to us in the aftermarket.
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  #9  
Old 01-22-2010, 05:11 PM
Jp7 Jp7 is offline
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Originally Posted by Fx4wannabe01 View Post
uhh....for whats it's worth, I'm fairly certain most of us here aren't going to be dyno tuning with a laptop next to us to get every tenth of horsepower out of our engine and doing our own tuning and writing our own tunes....

We're getting ballpark formulas written for us and our vehicles because that's what's available to us in the aftermarket.
Actually, doing it on the street can even be better for some reasons. If you have the software to adjust timing and fuel with the proper gauges and logging abilities its very easy on an N/A engine. Before dyno testing was of course street testing (hard pulls in 3rd gear) - everyone starts somewhere.
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Quote:
Originally Posted by FireRanger View Post
I'm dying to see this at night. Someone go tell the sun to give up already.
Quote:
Originally Posted by beef08 View Post
Your the man, you bring our dreams to a reality within the lighting spectrum
Quote:
Originally Posted by BCobe View Post
Jp7 you always do AMAZING work! Hats off to you sir
Quote:
Originally Posted by FireRanger View Post
People so often confuse "hating" with "knowing better".
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  #10  
Old 01-23-2010, 06:17 PM
Sasquatch Sasquatch is offline
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So I should get a self logging tune? Or will the SCT X3 work for me?
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  #11  
Old 01-23-2010, 06:22 PM
Sasquatch Sasquatch is offline
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Also What gauges would you prefer for me to use so that i'm able to self program?
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  #12  
Old 01-23-2010, 06:26 PM
Jp7 Jp7 is offline
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Originally Posted by Sasquatch View Post
Also What gauges would you prefer for me to use so that i'm able to self program?
Wideband Oxygen sensor w/ logging capability. In N/A applications I don't see a need for a vacuum gauge, but it is nice to have. I also prefer to run fuel pressure, oil pressure, oil temperature, voltage and air intake temperature.
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Quote:
Originally Posted by FireRanger View Post
I'm dying to see this at night. Someone go tell the sun to give up already.
Quote:
Originally Posted by beef08 View Post
Your the man, you bring our dreams to a reality within the lighting spectrum
Quote:
Originally Posted by BCobe View Post
Jp7 you always do AMAZING work! Hats off to you sir
Quote:
Originally Posted by FireRanger View Post
People so often confuse "hating" with "knowing better".
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  #13  
Old 01-23-2010, 06:28 PM
Sasquatch Sasquatch is offline
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Okay great and what about the tune? Would the SCT x3 work for now until i get my blower on?
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  #14  
Old 01-23-2010, 06:57 PM
Sasquatch Sasquatch is offline
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Would i want to have a fuel air mixture gauge? Sorry about the simple questions. I ask a lot to reassure that i'm on the right track.
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  #15  
Old 01-23-2010, 08:03 PM
Jp7 Jp7 is offline
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Would i want to have a fuel air mixture gauge? Sorry about the simple questions. I ask a lot to reassure that i'm on the right track.
Because mixing it too lean will burn things up.
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Quote:
Originally Posted by FireRanger View Post
I'm dying to see this at night. Someone go tell the sun to give up already.
Quote:
Originally Posted by beef08 View Post
Your the man, you bring our dreams to a reality within the lighting spectrum
Quote:
Originally Posted by BCobe View Post
Jp7 you always do AMAZING work! Hats off to you sir
Quote:
Originally Posted by FireRanger View Post
People so often confuse "hating" with "knowing better".
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