FAST 102/102 tuning issues
04-04-2013, 12:04 AM
#1
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FAST 102/102 tuning issues Hey guys, i have a LS1 with a Tony Mamo ported FAST 102 and Nick Williams 102 throttle body, were are having troubles tuning the idle at around 825 rpm as it seems to be constantly hunting, if anyone has a base map that they could perhaps lend as a start would be greatly appreciated or maybe some pro tuning tips, im more than happy to reimburse you for your knowledge/help getting it sorted, unfortunately there is not really anybody around with any experience in this sort of stuff my neck of the woods and we are supposed to be hitting the strip next week, cheers,
Matt
Matt
04-06-2013, 09:42 PM
#4
Hey Matt, Ron here. I'm one of CTD's hack students.....he will get the joke. 
Tell us about your car? Cam? Stick auto? And all that good stuff.
I'm also a drag racer, both old school (498" 69 Nova) and new school (2000 LS1 C5 Vette)
Kinda got spoiled with the LS and the injection and all that.........
One thing I found on my FAST 102 was that once apart, the gasket between the halves doesn't like to seal real well. I ported my own. Also noted that the design relys on the manifold to head bolts to seal the halves. So kind of a double whammy there. So at the least, check those bolts. Don't be afraid to snug them up pretty good. I was having idle issues, well, let's just say it changed, and I found that the bolts had loosened. Once tightened, I had to go through the base running airflow process....again. It had changed a lot.
Ron
Tell us about your car? Cam? Stick auto? And all that good stuff.
I'm also a drag racer, both old school (498" 69 Nova) and new school (2000 LS1 C5 Vette)
Kinda got spoiled with the LS and the injection and all that.........
One thing I found on my FAST 102 was that once apart, the gasket between the halves doesn't like to seal real well. I ported my own. Also noted that the design relys on the manifold to head bolts to seal the halves. So kind of a double whammy there. So at the least, check those bolts. Don't be afraid to snug them up pretty good. I was having idle issues, well, let's just say it changed, and I found that the bolts had loosened. Once tightened, I had to go through the base running airflow process....again. It had changed a lot.
Ron
10-08-2014, 01:39 PM
#5
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Hey Matt, Ron here. I'm one of CTD's hack students.....he will get the joke.
Tell us about your car? Cam? Stick auto? And all that good stuff.
I'm also a drag racer, both old school (498" 69 Nova) and new school (2000 LS1 C5 Vette)
Kinda got spoiled with the LS and the injection and all that.........
One thing I found on my FAST 102 was that once apart, the gasket between the halves doesn't like to seal real well. I ported my own. Also noted that the design relys on the manifold to head bolts to seal the halves. So kind of a double whammy there. So at the least, check those bolts. Don't be afraid to snug them up pretty good. I was having idle issues, well, let's just say it changed, and I found that the bolts had loosened. Once tightened, I had to go through the base running airflow process....again. It had changed a lot.
Ron
Tell us about your car? Cam? Stick auto? And all that good stuff.
I'm also a drag racer, both old school (498" 69 Nova) and new school (2000 LS1 C5 Vette)
Kinda got spoiled with the LS and the injection and all that.........
One thing I found on my FAST 102 was that once apart, the gasket between the halves doesn't like to seal real well. I ported my own. Also noted that the design relys on the manifold to head bolts to seal the halves. So kind of a double whammy there. So at the least, check those bolts. Don't be afraid to snug them up pretty good. I was having idle issues, well, let's just say it changed, and I found that the bolts had loosened. Once tightened, I had to go through the base running airflow process....again. It had changed a lot.
Ron
Matt
10-08-2014, 10:47 PM
#7
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10-09-2014, 01:03 AM
#10
Staging Lane
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10-09-2014, 01:17 AM
#11
I have mine so it doesn't hunt for idle anymore. It just hangs after free revving in park. It's not too bad when driving. I think the converter hides a lot of crap when driving.
Post your tune. You have to have the VE dialed in, MAF dialed in, and then you can adjust the spark, adaptive spark, adaptive air, and RAC. If the fueling is off, nothing will fix it. But if fueling is close, then the spark and RAC need to be right. I'd run the Russ k idle config file and get the right values in there and then turn off adaptive spark through the scanner and manually set your advance. Once the car stops shaking and idles smoothly, back off 2-4 degrees and set that as your idle spark. Then adjust your timing tables to have the same values in the 400-1200 cells.
Also, you may need to make some adjustments on your IAC steps with the larger 102.
Post your tune. You have to have the VE dialed in, MAF dialed in, and then you can adjust the spark, adaptive spark, adaptive air, and RAC. If the fueling is off, nothing will fix it. But if fueling is close, then the spark and RAC need to be right. I'd run the Russ k idle config file and get the right values in there and then turn off adaptive spark through the scanner and manually set your advance. Once the car stops shaking and idles smoothly, back off 2-4 degrees and set that as your idle spark. Then adjust your timing tables to have the same values in the 400-1200 cells.
Also, you may need to make some adjustments on your IAC steps with the larger 102.
10-09-2014, 11:30 PM
#12
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I have mine so it doesn't hunt for idle anymore. It just hangs after free revving in park. It's not too bad when driving. I think the converter hides a lot of crap when driving.
Post your tune. You have to have the VE dialed in, MAF dialed in, and then you can adjust the spark, adaptive spark, adaptive air, and RAC. If the fueling is off, nothing will fix it. But if fueling is close, then the spark and RAC need to be right. I'd run the Russ k idle config file and get the right values in there and then turn off adaptive spark through the scanner and manually set your advance. Once the car stops shaking and idles smoothly, back off 2-4 degrees and set that as your idle spark. Then adjust your timing tables to have the same values in the 400-1200 cells.
Also, you may need to make some adjustments on your IAC steps with the larger 102.
Post your tune. You have to have the VE dialed in, MAF dialed in, and then you can adjust the spark, adaptive spark, adaptive air, and RAC. If the fueling is off, nothing will fix it. But if fueling is close, then the spark and RAC need to be right. I'd run the Russ k idle config file and get the right values in there and then turn off adaptive spark through the scanner and manually set your advance. Once the car stops shaking and idles smoothly, back off 2-4 degrees and set that as your idle spark. Then adjust your timing tables to have the same values in the 400-1200 cells.
Also, you may need to make some adjustments on your IAC steps with the larger 102.
10-13-2014, 12:36 PM
#13
heres my tune its about as perfect as i can get for my car fast 102/102 nw tb... no hunting or idle drops when cruising. i highly suggest you run the russ k idle config. with mine i ended up cutting the adaptive idle times in half as well as making the min ltit -.5 from -3. these helped get idle control a little better when coming to a stop. it may or may not help you though as i firmly believe mine would have been a lot easier with a normal clutch
my follower and cracekr values will be off though because my lightweight clutch requires some tweaked values. still cant get it perfect because of that thing lol depending on what cam you may benefit from upping the idle speed...I tried so hard to keep an 825-850 idle but in the end the car was much more happy with 900. my clutch has caused a lot of issues with tuning the larger tb but overall its pretty well dialed in now theres just a couple small things i'll have to live with.
my follower and cracekr values will be off though because my lightweight clutch requires some tweaked values. still cant get it perfect because of that thing lol depending on what cam you may benefit from upping the idle speed...I tried so hard to keep an 825-850 idle but in the end the car was much more happy with 900. my clutch has caused a lot of issues with tuning the larger tb but overall its pretty well dialed in now theres just a couple small things i'll have to live with.
02-22-2019, 02:24 AM
#14
This sounds like typical behavior for tuning the FAST 102. Can anybody confirm that this is to be expected when choosing the 102/102 FAST combo ? I just purchased Tony Mamo AFR 220cc heads with the works. The tuner here in NJ is the LS1 preferred but I’d like to know what to expect.
02-23-2019, 12:45 AM
#15
This sounds like typical behavior for tuning the FAST 102. Can anybody confirm that this is to be expected when choosing the 102/102 FAST combo ? I just purchased Tony Mamo AFR 220cc heads with the works. The tuner here in NJ is the LS1 preferred but I’d like to know what to expect.
Do you realize you dredged up a 6 year old thread.....LOL
ALOT has progressed in 6 years including the shape of the 102 TB's making them alot easier to tune. Not to mention the tuning software and the talent of some folks out there as well by continually trying things that ultimately yields progress. The 102 deal is not the nightmare it was close to a decade ago when they first started becoming more popular and were more challenging at the time to tune.
Plus most of the tuning issues were more large cam related than manifold related anyway but you should have no problem finding a competent tuner to get your package to run right.....your cam is on the mild side.....its an easy car to tune
Hope this helps
-Tony
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www.mamomotorsports.com
Tony@MamoMotorsports.com
Anything worth doing is worth doing well. Build it right the first time....its alot cheaper than building it twice!!
02-23-2019, 03:19 PM
#16
Mark,
Do you realize you dredged up a 6 year old thread.....LOL
ALOT has progressed in 6 years including the shape of the 102 TB's making them alot easier to tune. Not to mention the tuning software and the talent of some folks out there as well by continually trying things that ultimately yields progress. The 102 deal is not the nightmare it was close to a decade ago when they first started becoming more popular and were more challenging at the time to tune.
Plus most of the tuning issues were more large cam related than manifold related anyway but you should have no problem finding a competent tuner to get your package to run right.....your cam is on the mild side.....its an easy car to tune
Hope this helps
-Tony
Do you realize you dredged up a 6 year old thread.....LOL
ALOT has progressed in 6 years including the shape of the 102 TB's making them alot easier to tune. Not to mention the tuning software and the talent of some folks out there as well by continually trying things that ultimately yields progress. The 102 deal is not the nightmare it was close to a decade ago when they first started becoming more popular and were more challenging at the time to tune.
Plus most of the tuning issues were more large cam related than manifold related anyway but you should have no problem finding a competent tuner to get your package to run right.....your cam is on the mild side.....its an easy car to tune
Hope this helps
-Tony
