FAST intake tuners P1514 setting
Thread Starter
Melting Slicks
Joined: Oct 2002
Posts: 2,855
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FAST intake tuners P1514 setting
My car went into reduced power and I think that caused me to loose the PCM when it got spiked--I have heard anything from deleting the p1514 code to setting it very high--any advise would be appreciated I have to have a PCM reflashed today and don't want the same thing to happen--Thanks Bill
Melting Slicks
Joined: Apr 2001
Posts: 3,034
Likes: 125
From: NY-South Florida
Re: FAST intake tuners P1514 setting (NEPTUNEBILL)
Bill,
I believe that code is set because the MAF see's more air then it should at crank and idle. Many due to the new manifold and TB. I forgot which setting it was in LS1 Edit but I know you increase the parameter by 125%. Deleting the code will not get rid of the problem. You stated that you replaced the PCM. You have to get it completely reprogrammed to fix the problem. You can't run stock programing on that motor alone yet the LSX/90mm. :eek:
I believe that code is set because the MAF see's more air then it should at crank and idle. Many due to the new manifold and TB. I forgot which setting it was in LS1 Edit but I know you increase the parameter by 125%. Deleting the code will not get rid of the problem. You stated that you replaced the PCM. You have to get it completely reprogrammed to fix the problem. You can't run stock programing on that motor alone yet the LSX/90mm. :eek:
Tech Contributor
Joined: Mar 2003
Posts: 12,094
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From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Re: FAST intake tuners P1514 setting (9D9LS1)
That is correct as he says with LS1-EDIT
Go to ENGINE DIAGNOSTIC and click TEST PARAMETERS then click the DTC1514 table and double it. I had those issues when I modified the TB/MAF. The TB is what is doing it. The MAP sensor I believe is what the comparrison is made at by how much predicted air is supposed to be comming in.
Anyway when I ported my TB, Chris at ECS told me the fix (double that table) but I tried 150% first and it didnt work. I then doubled it and it did work. He said that it is common with FI cars or for those with MAF/TB mods..... you now fall into the latter. Take care bill. :thumbs:
Go to ENGINE DIAGNOSTIC and click TEST PARAMETERS then click the DTC1514 table and double it. I had those issues when I modified the TB/MAF. The TB is what is doing it. The MAP sensor I believe is what the comparrison is made at by how much predicted air is supposed to be comming in.
Anyway when I ported my TB, Chris at ECS told me the fix (double that table) but I tried 150% first and it didnt work. I then doubled it and it did work. He said that it is common with FI cars or for those with MAF/TB mods..... you now fall into the latter. Take care bill. :thumbs:
Thread Starter
Melting Slicks
Joined: Oct 2002
Posts: 2,855
Likes: 0
Re: FAST intake tuners P1514 setting (9D9LS1)
I had to have the stock program put in here and overnighting it to Mike Norris to flash the power program in it and overnight it back--is 125% increase enough for the 436ci so I will have at least a place to start and not go into reduced power mode?
Melting Slicks
Joined: Mar 2003
Posts: 3,116
Likes: 10
From: Macomb MI
Re: FAST intake tuners P1514 setting (NEPTUNEBILL)
P1514 Is a fail safe test for the drive by wire, Only driveby wire (vettes) have this enabled. Its a simple check to insure the driveby wire isnt going haywire.This simply uses the 1514 table and compares it to the actual MAF values. The table is Airflow (Gms/cyl)vs %tps Vs RPM. Common problem on Turbo and SC cars. Most shops will just double the values and be done with it on an big cube NA car.
Phil
Phil
Thread Starter
Melting Slicks
Joined: Oct 2002
Posts: 2,855
Likes: 0
Re: FAST intake tuners P1514 setting (RoadRebel)
Thanks Phil I talked to Mike and thats about the only way to go--still not sure what would cause the spike but it never happens in a convienient spot---
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Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Re: FAST intake tuners P1514 setting (NEPTUNEBILL)
Yes I think the doubling will be plenty but it is possible that you may lessen the amount needed if you check one specific thing: If you are running a screenless MAF be sure you are using the ZO6 2002+ MAF table in your edit tune. If you must get it done by mail go the whole 2x.
sent you my number if you need faster answers and you think I can help. Try anytime Wed.
sent you my number if you need faster answers and you think I can help. Try anytime Wed.
Racer
Joined: Sep 2000
Posts: 487
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From: Below the Mason/Dixon Line Alabama
Re: FAST intake tuners P1514 setting (NEPTUNEBILL)
Bill: per our prior conversation, you may have to do more than simply scale the whole table. The reduced power events often come at small throttle openings, when the 90mm TB/intake and whatever package see much more airflow than the stock program allows. So you may well have to scale the whole table upwards and then further scale the lower throttle plate opening rows by a further ammount. This is what I had to do to gain reliability on my setup, which is similar to yours.
An alternate approach is to max the whole table: no one has posted whether that causes a different kind of error, so I've not done that.
An alternate approach is to max the whole table: no one has posted whether that causes a different kind of error, so I've not done that.
Thread Starter
Melting Slicks
Joined: Oct 2002
Posts: 2,855
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Re: FAST intake tuners P1514 setting (SPEED DOG)
Thanks Spin and Doc the PCM will be back this morning, Mike took another look at the p1514 but we already had it set at double I think and not sure that is what caused my reduced power, it could have simply been a defective PCM which pisses me off as well because with my altered programming they will not honor a warranty--well maybe before the day is over we will see what caused the problem anyway not that that will solve all the tuning issues but they are very close---
