what does this sound like ????? - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 18 Old 05-26-2011, 03:33 PM Thread Starter
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what does this sound like ?????

My tunner and i seem to be at odds with whats going on with my car. 1st tune made great power and was is very safe (he says) but idle was high at 1200 and driveability (freeway driving 9-10.1 fat right) was not that great.

2nd tune he got the idle down where it should be but my AF is right around 20.1 and the car shakes bad like i got a big a$$ cam in the car and then it dies sometimes.(way to lean i think).

Hes thinks its the mass air (the pro-m that on3 sells with there kit) and he want to use a lighting unit and the mafia extention. i guess my question is,is anyone else having problems tunning there car with this set up?


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post #2 of 18 Old 05-26-2011, 06:55 PM
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sounds like a bad tune to me
will create more problems going to a lightning meter


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post #3 of 18 Old 05-26-2011, 09:14 PM
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Is it a canned tuned ? If he is tuning it he should be able to log the maf counts and see if it's the maf or not.
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post #4 of 18 Old 05-26-2011, 09:34 PM Thread Starter
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No not a can tune... Think we found the problem .2 volts from the mass air.

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post #5 of 18 Old 05-27-2011, 05:48 AM
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I had a simalar problem with mine. Not enough voltage at idle. was only getting .2 also. Fuel maps can read below a .5 I believe. mass air might be slightly to large for stock. Im not sure how he got around it but it took some time on his part, and I still have the same meter. He might have increased the idle speed to get the volts up if that makes any sense. Sorry no help here but he did make it work somehow.

Good Luck!

88lx Conv. 200K mile stock longblock. Trickflow intake, 42lb inj, Pmas protube,TKO500, 3:27, pypes muffs, Pa Racing tubluar K-member, DIY single turbo setup. Summit aluminum rad, Crane Hi-fire ign, subfames, 17" sc saleen's, Saleen ground effects, SCT tune by Dynosport. 380HP 435ftbs.
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post #6 of 18 Old 05-27-2011, 01:08 PM
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I dont think the LMAF is the best choice for a turbo setup. IIRC they are designed to be sucked throught and that will make it a pain to set up your BOV. and i think if you turn the boost up you will peg a LMAF.

Whats your tuner using to tune, is he inputing the proper flow curve for the MAF and injector flow rates into the ECU?

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post #7 of 18 Old 05-27-2011, 01:42 PM
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I dont think the LMAF is the best choice for a turbo setup. IIRC they are designed to be sucked throught and that will make it a pain to set up your BOV. and i think if you turn the boost up you will peg a LMAF.

Whats your tuner using to tune, is he inputing the proper flow curve for the MAF and injector flow rates into the ECU?
He can use a lightning maf in blow-thru, I know of TT cobra that runs low tens doing it. He just needs a MAFia and he should be good. The tuner should be able to work with the MAF you have however.
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post #8 of 18 Old 05-27-2011, 08:53 PM
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Have you tried clocking the MAF to see if it changes the voltage it sees at idle ? What is he using to datalog the MAF voltage ?
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post #9 of 18 Old 05-28-2011, 09:09 PM Thread Starter
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Can someone tell which wires go to what on the pmas meter. I don't know why I'm only getting .2 volts.

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post #10 of 18 Old 05-30-2011, 12:15 AM
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Ford Fuel Injection » Mass Air Flow Sensor


do you have any bends less then 6in before or after the maf ??

I have has zero issues with my PMAS maf. I bought it from PMAS calibrated to the bends in my cold side... I thought it was a issue at one time but they cleaned/inspected it for free. turns out it was not my issue..


Mine is the 42# cal.. if ya like I can check the voltage on mine at idle.. I still have the break out box/DMM in the passenger seat lol


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post #11 of 18 Old 05-30-2011, 09:01 AM
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Think you need to get a real tuner, this tooner is obviously not capable.

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post #12 of 18 Old 05-30-2011, 04:53 PM Thread Starter
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Originally Posted by red89coupe View Post
Ford Fuel Injection » Mass Air Flow Sensor


do you have any bends less then 6in before or after the maf ??

I have has zero issues with my PMAS maf. I bought it from PMAS calibrated to the bends in my cold side... I thought it was a issue at one time but they cleaned/inspected it for free. turns out it was not my issue..


Mine is the 42# cal.. if ya like I can check the voltage on mine at idle.. I still have the break out box/DMM in the passenger seat lol
Thanks for the info.

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post #13 of 18 Old 05-30-2011, 04:55 PM Thread Starter
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Think you need to get a real tuner, this tooner is obviously not capable.
The problem is Im already into him for 550 for the tune he's done thus far

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post #14 of 18 Old 05-30-2011, 06:02 PM
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if the tune isnt right you shouldnt have to pay for it. most reputable tuners wont let the car leave the shop until everything is right

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post #15 of 18 Old 05-30-2011, 11:43 PM Thread Starter
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My tunner is willing to make it right it just need to fix the problem with the car first.

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post #16 of 18 Old 05-30-2011, 11:52 PM
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Quote:
Originally Posted by 2Guard View Post
My tunner is willing to make it right it just need to fix the problem with the car first.
.2 is LOW... I get .8 with my pmas at idle.. and thats at about 950 rpm



its been a while since I looked at it tho so I could be off..... now im gonna have to check tomorrow to make sure lol

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Last edited by red89coupe; 05-30-2011 at 11:57 PM.
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post #17 of 18 Old 05-31-2011, 02:29 AM Thread Starter
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I don't even know where to start looking this lost voltage. But yes .2 is low.

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post #18 of 18 Old 05-31-2011, 05:51 AM
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I've seen people use these in the past.

Link-----> IST Products

88lx Conv. 200K mile stock longblock. Trickflow intake, 42lb inj, Pmas protube,TKO500, 3:27, pypes muffs, Pa Racing tubluar K-member, DIY single turbo setup. Summit aluminum rad, Crane Hi-fire ign, subfames, 17" sc saleen's, Saleen ground effects, SCT tune by Dynosport. 380HP 435ftbs.

Last edited by 71swing; 05-31-2011 at 05:54 AM.
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