997.2 Intercoolers - Wow!
#61
10-14-2010 | 09:51 PM
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Thank you -I appreciate all the comments (good or bad!) & dialog from everyone here, but this means a lot coming from you. If I had the coin & wasn't so hard headed, I would have a set of your coolers -there is a lot to be said for avoiding headaches with a strong performing, direct replacement option such as yours. I hope these .2 coolers will open the door for better performance and more safety for folks with mild to moderate upgrades, but make no mistake, they will require getting one's hands a little dirty & some cutting and trimming -not everyone's cup of tea.
#65
10-14-2010 | 10:52 PM
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earl3- thanks for actually doing some real a/b testing. While I find that a/b testing always done to validate real data, it seems that most vendors here are more into snake oil, cosmetics and hyperbole... then everyone jumps on the bandwagon (count me as one who made that mistake!) REP POINTS FOR YOU!!
now watch the naysayers tell you to swap left and right sides to see if there is a significant difference for whatever reason
now watch the naysayers tell you to swap left and right sides to see if there is a significant difference for whatever reason
#68
10-15-2010 | 06:06 AM
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Great work, thanks for sharing. The cost delta between these and the high dollar coolers is huge. I wonder if any vendors or 6speeders have any coolers laying around that they could send you, so you could compare using your set up?
#70
10-15-2010 | 07:29 AM
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I would like to see a IC based on these cores... i dont like plastic end tanks they should be switched out to better ones in alu. Then you can also get rid of the restriction that the oem pipe 1 7/8" have and use 2,5" all the way. Maybe a project i should consider this winter is there any tuner/shop that sell only the endtanks ?
#71
10-15-2010 | 07:57 AM
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I would like to see a IC based on these cores... i dont like plastic end tanks they should be switched out to better ones in alu. Then you can also get rid of the restriction that the oem pipe 1 7/8" have and use 2,5" all the way. Maybe a project i should consider this winter is there any tuner/shop that sell only the endtanks ?
This is out of this thread...gt2rs do you have pics of your car.Your's is a 996GT2 RS right?.I would like very much to see pics of your car and to know about HP and all info you may know.It's very interesting.
Thanks
Rolando
#72
10-15-2010 | 07:58 AM
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Initial results are in...
Background on the test car:
01 996 TT 6 speed, ~38k miles, fresh plugs, 94 octane, K16 turbos
EPL Flash
2.5" turbo inlet pipes
Remus Exhaust
996GT2 Intercooler (same as 997.1) driver's side
997.2 Intercooler (same as GT2 RS) passenger's side
You wish you had this logging setup!
(see previous posts for equipment)
Note that I am at high density altitude (~6000ft today), so to create the 2bar or so of absolute pressure that a 1 bar flash calls for, these turbos are producing ~1.3 bar at the outlets to make up for the low ambient pressure (and quickly falling out of their efficiency range) -perfect for a thermal test on intercoolers!
I'm still sifting through the data but here's the first log:
This is a full 1-4 pull after a few quick 2-3 pulls to get her warmed up, ambient temp of 23.3C. The pull starts at 14 seconds & I let off at about 28.5 secs.
Video of this run so you can get an idea of recovery time (~14-60s): http://www.youtube.com/watch?v=ZhC-O...tart=10&end=60
I'll get the rest of the data up later but it's pretty much the same story after repeated pulls, you're looking at better than a 20C improvement (34F) once you get some load on these coolers (more as you do extended pulls).
and that, my friends, is HUGE. I would challenge any of the budget (<$1600) intercooler options out there with this cooler in thermal efficiency (any probably some higher dollar ones as well). Rest of the writeup with duct mod instructions to follow.
Random thought...if I can produce logs of 2 different coolers on the same car at the same time with $200 of equipment and between a full time job, why can't very many of the people who sell these things do the same? ...the truth is out there
I'll do some follow on tests when I put my 16g's on, though I would expect lower overall temps with the larger & more efficient compressors.
Background on the test car:
01 996 TT 6 speed, ~38k miles, fresh plugs, 94 octane, K16 turbos
EPL Flash
2.5" turbo inlet pipes
Remus Exhaust
996GT2 Intercooler (same as 997.1) driver's side
997.2 Intercooler (same as GT2 RS) passenger's side
You wish you had this logging setup!
(see previous posts for equipment) Note that I am at high density altitude (~6000ft today), so to create the 2bar or so of absolute pressure that a 1 bar flash calls for, these turbos are producing ~1.3 bar at the outlets to make up for the low ambient pressure (and quickly falling out of their efficiency range) -perfect for a thermal test on intercoolers!
I'm still sifting through the data but here's the first log:
This is a full 1-4 pull after a few quick 2-3 pulls to get her warmed up, ambient temp of 23.3C. The pull starts at 14 seconds & I let off at about 28.5 secs.
Video of this run so you can get an idea of recovery time (~14-60s): http://www.youtube.com/watch?v=ZhC-O...tart=10&end=60
I'll get the rest of the data up later but it's pretty much the same story after repeated pulls, you're looking at better than a 20C improvement (34F) once you get some load on these coolers (more as you do extended pulls).
and that, my friends, is HUGE. I would challenge any of the budget (<$1600) intercooler options out there with this cooler in thermal efficiency (any probably some higher dollar ones as well). Rest of the writeup with duct mod instructions to follow.
Random thought...if I can produce logs of 2 different coolers on the same car at the same time with $200 of equipment and between a full time job, why can't very many of the people who sell these things do the same? ...the truth is out there
I'll do some follow on tests when I put my 16g's on, though I would expect lower overall temps with the larger & more efficient compressors.
Really like the info and method of testing! Very informative, curious as to why the 997.1 intercooler temp drops a lot quicker than the 997.2??
#73
10-15-2010 | 08:19 AM
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Agreed - great work, Earl.
I think the OEM hose connection restriction is the biggest issue for anyone looking to do a higher HP, high flow set-up. The OEM hoses and fittings neck down to about 1 7/8", which is not helpful when going to a larger 2.5" Y-Pipe or larger throttle body for performance.
I think the OEM hose connection restriction is the biggest issue for anyone looking to do a higher HP, high flow set-up. The OEM hoses and fittings neck down to about 1 7/8", which is not helpful when going to a larger 2.5" Y-Pipe or larger throttle body for performance.
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former 1972 911T white, 1984 911 3.2 Targa black, 993 cab white, 993TT arena red, 993TT silver, 996TT speed yellow, 991.1 GT3 white
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991.2 GT3 RS Weissach Racing Yellow
991.2 Turbo S GT Silver
991.2 GT3 Chalk (Manual)
2022 Cayenne White
former 1972 911T white, 1984 911 3.2 Targa black, 993 cab white, 993TT arena red, 993TT silver, 996TT speed yellow, 991.1 GT3 white
www.speedtechexhausts.com
info@speedtechexhausts.com
Testimonials facebook SpeedTech Exhaust Videos
#74
10-15-2010 | 09:01 AM
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I was on the brakes down to 40mph pretty hard, so recovery times are probably skewed a bit (for both coolers) with the lower airflow. I'll put up my other logs where I kept some speed.
Last edited by earl3; 10-15-2010 at 10:08 AM.
#75
10-15-2010 | 09:10 AM
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Earl,
I agree about the data point. I, like most here, am a data guy. I can't see why ECU tuning, intercooler, and exhaust manufacturers do not have data for ALL of their products. It seems like a flow resistance test, temperature readings, and a dynograph would be standard fare for the manufacturers who claim to make our cars better.
Great work. we all appreciate it! I already bought my 997.2 intercoolers today. Thanks for the great writeup.
I agree about the data point. I, like most here, am a data guy. I can't see why ECU tuning, intercooler, and exhaust manufacturers do not have data for ALL of their products. It seems like a flow resistance test, temperature readings, and a dynograph would be standard fare for the manufacturers who claim to make our cars better.
Great work. we all appreciate it! I already bought my 997.2 intercoolers today. Thanks for the great writeup.