Performance throttle calibrators ????????

[LT4-FUN]

Has anyone used a "performance throttle calibrator"? I just got one as a present this xmas and was wondering if anyone has experience using one and if it works or not or is it really worth it. They "claim" 60% more in acceleration by sending a signal to the computer telling it that you are at 3/4 wide open at the throttle thus giving more fuel and timing advance's. I always thought that was the job of the obdc 2 anyway. The part came from Zip products along with a MAF relocator {which I will keep}. Thanks, and HAPPY NEW YEAR!!!!

 

[LT4man]

In theory they should work. IMHO and the opinion of many who visit this site: They are total BS! They do certainly work putting CASH in the pocket of the vendor! :L

Practically speaking, install it and let us know what it does. If you think it works, leave it on. If you don't, take it off.

As far as the MAF relocator. Did you mean MAT relocator? Again, there is a difference of opinion. I have one and really believe it works. Others here have no use for them. I do live in a very hot climate during the summer (Chicago) and when the temp hits 90, my Vette continues to run great.

Save The Wave!

 

[LT4-FUN]

Thats what I thought also, but what the heck it was free so I guess I'll try it. Oh yeah, that was a typo on my part. I did mean the MAT. I live in New England and it get's pretty hot here too some days and like I said, it was free.
Nice ride BTW lt4man!! Is that a red stripe on your hood or am I seeing things? looks sharpe!

 

[geekinavette]

I wouldn't install one of those things. 3/4 throttle is not WOT...plain and simple. Sorry to say to whoever bought it for you....but that is about the biggest ripoff out there. There "might" be a dollar's worth of electronic parts in that thing.

Maybe you can return it and get something actually worth a few bucks?

Bill

 

[LT4man]

Thats what I thought also, but what the heck it was free so I guess I'll try it. Oh yeah, that was a typo on my part. I did mean the MAT. I live in New England and it get's pretty hot here too some days and like I said, it was free.
Nice ride BTW lt4man!! Is that a red stripe on your hood or am I seeing things? looks sharpe!

That is definitely a red stripe which happens to read: CORVETTE!
Another great quality product from Mid America Motorworks. Also a proud sponsor of the CAC! I have not seen many of them. They come in different colors to match your paint scheme.

Thanks very much for the compliments. My Vette was actually on three covers of the MAM C4 catalog. I had a thread on here. Maybe I will post them again.

Save The Wave!

 

[LT4-FUN]

I wouldn't install one of those things. 3/4 throttle is not WOT...plain and simple. Sorry to say to whoever bought it for you....but that is about the biggest ripoff out there. There "might" be a dollar's worth of electronic parts in that thing.

Maybe you can return it and get something actually worth a few bucks?

Bill

I agree but, my kid got me it for xmas and I hate to break his heart. Originally he wanted to buy a borla pkg. but I told him no way. Big bucks! Everyone should have a kid like that! And no, he won't get the vette by himself! lol.

 

[LT4-FUN]

That is definitely a red stripe which happens to read: CORVETTE!
Another great quality product from Mid America Motorworks. Also a proud sponsor of the CAC! I have not seen many of them. They come in different colors to match your paint scheme.

Thanks very much for the compliments. My Vette was actually on three covers of the MAM C4 catalog. I had a thread on here. Maybe I will post them again.

Save The Wave!

I would love to see it. Thats koool!
Ps. What mods have you done?:cool

 

[geekinavette]

I agree but, my kid got me it for xmas and I hate to break his heart. Originally he wanted to buy a borla pkg. but I told him no way. Big bucks! Everyone should have a kid like that! And no, he won't get the vette by himself! lol.

I hear ya there! My little 7 yr old keeps telling me he's gonna save up his allowance and buy me a new "black" Corvette. LOL

 

[Aurora40]

I beleive what you mean is it sends "WOT" at only 3/4 throttle, not that it sends "3/4" all the time.

I never understand the "mods" about sending erroneous data to the ECM. How will that be helpful? If the throttle isn't really open, the MAF will show that. And if there really isn't more air coming in, why would you want more fuel/etc? The only thing it might help is if you go WOT and your TPS isn't sending the wide open voltage. The correct fix of course would be to adjust or replace the sensor, though.

The MAT relocation I could see, only because the sensor can possibly send erroneous data itself. If the metal it is in gets heatsoaked from sitting, it might be the incoming air cools down when you start off again, but that the MAT is reporting a higher temp due to the soak of the material it is mounted in. Relocating it to a material that doesn't get heatsoaked, like plastic, might help.

Other than that, I really don't understand those mods. Faking out the computer so it delivers the wrong timing, wrong fuel, etc, how is that beneficial?

 

[*89x2*]

...a properly adjusted TPS sensor does the same thing - for FREE :cool

 

[Achilles]

...a properly adjusted TPS sensor does the same thing - for FREE :cool

What do you mean by properly adjusted TPS? Are you refering to the stock adjustment setting?

 

[grapeknutz]

What do you mean by properly adjusted TPS? Are you refering to the stock adjustment setting?

There are the stock non adjustable one and there are aftermarket ones that are. Get the one that is and set is to the stock adjustment settings in the service manual.

 

[Aurora40]

What do you mean by properly adjusted TPS? Are you refering to the stock adjustment setting?

It might depend on the year? L98 cars definitely have an adjustable TPS. You need a multimeter on it while you move it around. The LT5 is also adjustable this way. I don't know about the LT1/4, perhaps they were no longer adjustable by then.

Mid America sells a nice wiring harness that lets you hook up the multimeter much more easily and non-intrusively.

 

[speedmaster4]

L98s 90/91 and LT-1 ecm's take whatever input tps is sending at start-up (within specified wide range) and baseline that input as 0% throttle...tps is non-adjustable cause moving it wont do anything, unless u get beyond the 'wide range' which will turn on MIL

gadget to fool ecm re throttle position will put fuel delivery into richer power mode and use more gas, raise emissions, lower exh temp,etc--but until you put ur foot in it to add air(oxygen) there will be only minute power increase...so if you want to develope more hp and go faster--just put ur foot in the carburetor--oops--put the pedal to the metal--oops--aw, u know

 

[*89x2*]

It might depend on the year? L98 cars definitely have an adjustable TPS. You need a multimeter on it while you move it around. The LT5 is also adjustable this way. I don't know about the LT1/4, perhaps they were no longer adjustable by then.

Mid America sells a nice wiring harness that lets you hook up the multimeter much more easily and non-intrusively.

I agree, the ones listed are adjustable - My LT1 version looks similar to my L98's so, :confused

 

[Achilles]

What do you mean by properly adjusted TPS? Are you refering to the stock adjustment setting?

I'm still not sure that my question has been answered.

Let me re-phrase: When you refer to "properly adjusted TPS", are you refering to the stock setting of .54v? At least as far as an 86 L98 is concerned.

 

[Aurora40]

L98s 90/91 and LT-1 ecm's take whatever input tps is sending at start-up (within specified wide range) and baseline that input as 0% throttle...tps is non-adjustable cause moving it wont do anything, unless u get beyond the 'wide range' which will turn on MIL

Hmm, my bust. My 1987 'vette needed adjustment (according to my Haynes manual at the time) as part of TPS installation, but that was a MAF car. And my LT5 does as well, even though it's speed-density. But I just read the L98 section of my service manual for 1990 and you are right, no adjustment is needed on the L98 that year.

 

[Aurora40]

I'm still not sure that my question has been answered.

Let me re-phrase: When you refer to "properly adjusted TPS", are you refering to the stock setting of .54v? At least as far as an 86 L98 is concerned.

Yes, I believe they are referring to making sure it has the appropriate voltage at closed-throttle. I don't know if that's .54v, but whatever it is, ensuring it is set to that should ensure it properly sends WOT when you hammer it. Though you can check the WOT voltage too, I believe it should be around 5v.

 

[Achilles]

Yes, I believe they are referring to making sure it has the appropriate voltage at closed-throttle. I don't know if that's .54v, but whatever it is, ensuring it is set to that should ensure it properly sends WOT when you hammer it. Though you can check the WOT voltage too, I believe it should be around 5v.

Thanks for clarifying.