steph93lx
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- Sep 30, 2014
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- 2018 GT 301A A10, Modded N/A 1993 coupe 5.0L
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2016 Mustang GT auto. Jlt cai, bbk 1" 7/8 off-road lth, custom tuned. All test done on a Mustang dyno who simulate the weight and aerodynamics of the car. Run made in third gear. Result would have been higher in 4th gear. The goal was not to make hp record but to compare intakes and TB. All graph are WCF(corrected) numbers.
Like my car, his car tuning with the stock intake is pretty much optimized is spend hours to tune is stock intake tune . He did not change too much his tune with the stock TB and gt350 intake test but he made changes to the tune to make it run with the gt350 TB. Obviously some numbers could be gain with more tuning with the gt350 intake.
We did try also a run going back with stock vct numbers just too see and we loose a bit everywhere. Again we may regain a bit of torque and hp bellow 6000 rpm playing with the vct and other stuff but I don't think it will make a huge difference but I could be wrong. Will see later when it will be on my own car.
He lock the ignition timing so it remain constant for all dyno runs. So no false result because a run that gave like 5 point of timing more or less than another!
This is not my car. My friend the dyno owner of Expert tuning in Napierville, Qc did a couple day before a dyno test of the 2015-16 GT intake vs 2011-2014 intake just for curiosity. The 2015 intake was a little bit stronger but barely. The difference may even have been only attributed to the higher intake air temp when running the 11-14 intake.
So he decide to leave the 2014 gt intake to save time since they are pretty much putting the same power curve and dyno it against my gt350 intake. It should not really affect the test. If anything the difference would have been even less.
By the way he decide to put the limiter at 7400. I would have like to have it much higher like 7800-8000 rpm but it's his car not mine. So I did not insist. It was not that important anyway as it peak before 7400 around 7300. Looks like it would have been good for shifting at 7800-7900 or even 8000 rpm. At 7400 it did not drop more than a couple HP.
I put the graph of the 2014 vs 2015 gt intake to show how close they are
Gt350 intake with stock 80mm t.b. vs gt intake
And gt350intake with stock tb vs gt350 tb
Result analysis :
GT350 intake and stock tb good above 5700 rpm and great gain on top. Big lost of torque bellow 5700 rpm especially over 30 lbs/ ft of torque @ 4200rpm and 20 @ 5200 rpm.
Small lost of HP and torque with the gt350 tb vs stock one. Not near the 30 pound /ft lost of another test we've seen but there is something weird going on with that 87mm gt350 TB. The iat were a little higher with the gt350 tb so the lost it not too excessive however what it's really strange it's that the gt350 tb maf reading read less air entering the engine. I must say that the gt350 tb have a really big sharp lip at the bottom entrance where the stock tb is pretty smooth. Need to do more testing with a full tuning before throwing it away but at first I will run the gt350 intake with the stock T.B.
In my opinion.
The good: for a M6 shifting at 7700-8000 rpm or so hoping the tranny take it nicely and launching at 5500-6000 rpm even higher if needed being able to stay out of low rpm to keep a good 60ft it should be equal to great gain at the 1/4 mile!!
The bad : For a auto with a stock converter .... ouch! You may gain mph and have a good second 1/8 but what you will be losing in the 60ft and first 1/8 would give you a tough time.
Auto with a 4c or 5c converter it may be ok but how much faster I don't know. Time will tell.
Just my opinion!
I must say the results are pretty much what I expected however I would have think that it would have lost a bit less than the 30 ft torque I was thinking more like 20 maybe 25. Maybe with a 100% optimized tune we can get back closer to those number. Time will tell. He will keep is stock intake since he is running the stock converter. I will put in on my M6 later in the season and will report the results.
Like my car, his car tuning with the stock intake is pretty much optimized is spend hours to tune is stock intake tune . He did not change too much his tune with the stock TB and gt350 intake test but he made changes to the tune to make it run with the gt350 TB. Obviously some numbers could be gain with more tuning with the gt350 intake.
We did try also a run going back with stock vct numbers just too see and we loose a bit everywhere. Again we may regain a bit of torque and hp bellow 6000 rpm playing with the vct and other stuff but I don't think it will make a huge difference but I could be wrong. Will see later when it will be on my own car.
He lock the ignition timing so it remain constant for all dyno runs. So no false result because a run that gave like 5 point of timing more or less than another!
This is not my car. My friend the dyno owner of Expert tuning in Napierville, Qc did a couple day before a dyno test of the 2015-16 GT intake vs 2011-2014 intake just for curiosity. The 2015 intake was a little bit stronger but barely. The difference may even have been only attributed to the higher intake air temp when running the 11-14 intake.
So he decide to leave the 2014 gt intake to save time since they are pretty much putting the same power curve and dyno it against my gt350 intake. It should not really affect the test. If anything the difference would have been even less.
By the way he decide to put the limiter at 7400. I would have like to have it much higher like 7800-8000 rpm but it's his car not mine. So I did not insist. It was not that important anyway as it peak before 7400 around 7300. Looks like it would have been good for shifting at 7800-7900 or even 8000 rpm. At 7400 it did not drop more than a couple HP.
I put the graph of the 2014 vs 2015 gt intake to show how close they are
Gt350 intake with stock 80mm t.b. vs gt intake
And gt350intake with stock tb vs gt350 tb
Result analysis :
GT350 intake and stock tb good above 5700 rpm and great gain on top. Big lost of torque bellow 5700 rpm especially over 30 lbs/ ft of torque @ 4200rpm and 20 @ 5200 rpm.
Small lost of HP and torque with the gt350 tb vs stock one. Not near the 30 pound /ft lost of another test we've seen but there is something weird going on with that 87mm gt350 TB. The iat were a little higher with the gt350 tb so the lost it not too excessive however what it's really strange it's that the gt350 tb maf reading read less air entering the engine. I must say that the gt350 tb have a really big sharp lip at the bottom entrance where the stock tb is pretty smooth. Need to do more testing with a full tuning before throwing it away but at first I will run the gt350 intake with the stock T.B.
In my opinion.
The good: for a M6 shifting at 7700-8000 rpm or so hoping the tranny take it nicely and launching at 5500-6000 rpm even higher if needed being able to stay out of low rpm to keep a good 60ft it should be equal to great gain at the 1/4 mile!!
The bad : For a auto with a stock converter .... ouch! You may gain mph and have a good second 1/8 but what you will be losing in the 60ft and first 1/8 would give you a tough time.
Auto with a 4c or 5c converter it may be ok but how much faster I don't know. Time will tell.
Just my opinion!
I must say the results are pretty much what I expected however I would have think that it would have lost a bit less than the 30 ft torque I was thinking more like 20 maybe 25. Maybe with a 100% optimized tune we can get back closer to those number. Time will tell. He will keep is stock intake since he is running the stock converter. I will put in on my M6 later in the season and will report the results.
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