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Old 01-18-2009, 12:26 PM   #1
DBK
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Default Acceleration question

I have noticed that my GTR is a little slower, especially above 70mph after I put Cobb 91 program onto car. However, just prior to doing that, I had my 1000 mile service. During that service they talked me into changing coolant to 50/50 mix because of cold weather in Kansas. Due to bad weather, I couldnt run car hard after service and before Cobb reflash. Ive since read posts stating that in summer should switch back to 30/70 coolant for performance, but dont know if that means the car is slower at 50/50, or need 30/70 for temp regulation during performance. My questions are weather anyone knows weather the 50/50 coolant will indeed make car slower (even after Cobb upgrade), or is it possible that the Cobb program was actually detrimental to performance?
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Old 01-23-2009, 11:39 PM   #2
nickbegonja55
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try to reinstall the cobb map!
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Old 02-05-2009, 03:39 PM   #3
theTTshark
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Quote:
Originally Posted by DBK View Post
I have noticed that my GTR is a little slower, especially above 70mph after I put Cobb 91 program onto car. However, just prior to doing that, I had my 1000 mile service. During that service they talked me into changing coolant to 50/50 mix because of cold weather in Kansas. Due to bad weather, I couldnt run car hard after service and before Cobb reflash. Ive since read posts stating that in summer should switch back to 30/70 coolant for performance, but dont know if that means the car is slower at 50/50, or need 30/70 for temp regulation during performance. My questions are weather anyone knows weather the 50/50 coolant will indeed make car slower (even after Cobb upgrade), or is it possible that the Cobb program was actually detrimental to performance?
Wow! Someone in Topeka has a GT-R! I don't believe it! I live in Silver Lake.

haha Sorry about the threadjack, but I was just amazed.

Last edited by theTTshark; 02-05-2009 at 03:48 PM..
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Old 02-05-2009, 10:40 PM   #4
DBK
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After resetting the ECU the car is better than stock, almost no bogging down on launch (I dont use launch control) I dont know how accurate the Cobb accessport is in measuring 0-60mph, but it recorded 3.59 seconds for non launch control 0-60.
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