radiator
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Instructor
Joined: Jun 2010
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From: OOB ME
radiator
I seen people switching over to dewits radiators I did a search and haven't found around what hp level people start switching to them and what hp it is necessary to run them... Ill be 525-550ish... When would I need to start thinking about one?
Team Owner
Joined: Jan 2007
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From: cookeville tennessee
Melting Slicks
Joined: Jan 2007
Posts: 3,021
Likes: 133
From: Conejo Valley CA
I recently updated my FI setup from an older generation A&A configuration to the latest A&A configuration. Since everything was taken apart, it seemed to be a good time to switch to the DeWitts... and I am glad I did.
My older configuration was easily pushing 560 HP to wheel. My newer configuration does 580 to the wheel (I added a mild blower cam in the process). With the DeWitts, I noticed almost a 25-30 degree temperature drop! To give you an idea, when I would idle in traffic, I would see the temps in the 205-220 range depending upon the time of year. With the DeWitts, I idle in traffic at about 180 or less. Granted, some of this improvement can be attributed to returning the position of the radiator to its original upright position (a benefit from going with the updated configuration). So as you often hear on car commercials "... your mileage will vary". I think it is a smart thing to do if you have an FI step and I consider radiator upgrade a good insurance policy.
My older configuration was easily pushing 560 HP to wheel. My newer configuration does 580 to the wheel (I added a mild blower cam in the process). With the DeWitts, I noticed almost a 25-30 degree temperature drop! To give you an idea, when I would idle in traffic, I would see the temps in the 205-220 range depending upon the time of year. With the DeWitts, I idle in traffic at about 180 or less. Granted, some of this improvement can be attributed to returning the position of the radiator to its original upright position (a benefit from going with the updated configuration). So as you often hear on car commercials "... your mileage will vary". I think it is a smart thing to do if you have an FI step and I consider radiator upgrade a good insurance policy.
Thread Starter
Instructor
Joined: Jun 2010
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From: OOB ME
I expect to be up around where you are I have a blower cam as well, looks like I will be doing that too before summer..
My question now I guess is which one to get I plan on running the b and m trans cooler with the fan and running standalone. Should I get the radiator for a manual transmission or should I get the one for the auto.. I have an a4 but am not going to run through the radiator?
My question now I guess is which one to get I plan on running the b and m trans cooler with the fan and running standalone. Should I get the radiator for a manual transmission or should I get the one for the auto.. I have an a4 but am not going to run through the radiator?
Former Vendor
Joined: Jul 2010
Posts: 4,504
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From: Waterloo Ontario
I expect to be up around where you are I have a blower cam as well, looks like I will be doing that too before summer..
My question now I guess is which one to get I plan on running the b and m trans cooler with the fan and running standalone. Should I get the radiator for a manual transmission or should I get the one for the auto.. I have an a4 but am not going to run through the radiator?
My question now I guess is which one to get I plan on running the b and m trans cooler with the fan and running standalone. Should I get the radiator for a manual transmission or should I get the one for the auto.. I have an a4 but am not going to run through the radiator?
With an A&A kit on a stock motor you really should have no cooling issues if the tune is spot on, but it's nice to just do everything at once and have it all taken care of.
Team Owner
Joined: May 2006
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From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
I switched when my stocker took a dump 
No matter what HP level it is an awesome and eventual necessary upgrade in my humble opinion
But just so you know I did mine at 639 RWHP! Now @ 701 RWHP!
Thanks,Matt
No matter what HP level it is an awesome and eventual necessary upgrade in my humble opinion
But just so you know I did mine at 639 RWHP! Now @ 701 RWHP!
Thanks,Matt
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Thread Starter
Instructor
Joined: Jun 2010
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From: OOB ME
When I forge my bottom end in a year or so than I will definatley do this upgrade possibly this summer, whenever I feel I need the upgrade.. As it seems so far people are doing it at 625 and up..
Team Owner
Joined: Jan 2007
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From: cookeville tennessee
