Little tuning help needed fast 102 instal
12-27-2012, 07:28 PM
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Little tuning help needed fast 102 instal Ok fellas quick run down car was dyno tuned already but with ls6 intake tuned perfectly. I just did a intake sway to a fast 102 with ls3 tb and installed varram air intake in place of stock.
In turn this moved my map sensor to front of intake of course and my Maf sensor closer to tb from previous bottom on stock air intake. Ok problem car throwing 2 codes you guess it Maf and map sensor code car cranks and cuts off. No air leaks. And the tuner is closed till jan 2 nd. If anyone can make these simple adjustments or walk me threw it I have efi live thanks you guys. I even thought bout changing to sd tune.
In turn this moved my map sensor to front of intake of course and my Maf sensor closer to tb from previous bottom on stock air intake. Ok problem car throwing 2 codes you guess it Maf and map sensor code car cranks and cuts off. No air leaks. And the tuner is closed till jan 2 nd. If anyone can make these simple adjustments or walk me threw it I have efi live thanks you guys. I even thought bout changing to sd tune.
12-29-2012, 12:59 PM
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ok do anyone have a tune with fast 102 so i can look at maf chart?and map chart. on a head and cam ls1 or anything so i can see how them charts change
12-29-2012, 02:40 PM
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The combination of intake ducting change, throttle body and intake manifold really changes the volumetric efficiency of the engine along with the MAF transfer because the complete air tract is now different.
If in SD the car should run fine until the tuner could retune the car but the MAF table is gonna need tweaked to run correct. There are also lookup tables on the DBW cars that calculate airflow vs tps vs rpm and if they are off it'll go into REP. Also the SD and MAF have a table that will trip a code if they are different so much between the two. That usually results in a MAF fault code and forces the car in SD.
Either way your gonna need to get it tuned before it'll run right. Or you could reinstall the stock airbridge and MAF to its original location until you can get it tuned. That will help the MAF to read closer to what it did before.
If in SD the car should run fine until the tuner could retune the car but the MAF table is gonna need tweaked to run correct. There are also lookup tables on the DBW cars that calculate airflow vs tps vs rpm and if they are off it'll go into REP. Also the SD and MAF have a table that will trip a code if they are different so much between the two. That usually results in a MAF fault code and forces the car in SD.
Either way your gonna need to get it tuned before it'll run right. Or you could reinstall the stock airbridge and MAF to its original location until you can get it tuned. That will help the MAF to read closer to what it did before.
12-29-2012, 10:28 PM
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Im just going to wait till next week when tuner opens back up and see how long the wait will be for me to get back on dyno.
Also I'm thinking bout going sd this time even though it's a ls1 it should be worth the gain I'm guessing
Also I'm thinking bout going sd this time even though it's a ls1 it should be worth the gain I'm guessing
