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Old 04-02-2005, 01:24 PM   #1
silvscorp
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Default cobb tuning vs gearbox?

i guess this is some what related to the engine tuning section?

Just wondering if the cobb tuning or along with others, do those maps actually depend on what type of gears you have? Most cars I guess it was tuned with stock tranny. What if you upgrade to 6mt or RA gears? Due to closer ratio, the load on the engine will be decreased so you won't see a high psi as on stock tranny, so how would the maps (cobb 2.5 for example) effect the setup or does it even matter?
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Old 04-02-2005, 01:35 PM   #2
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wow, i thought about this as well at one point in time....
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Old 04-02-2005, 05:16 PM   #3
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Good question. Hopefully Clark or some other smart guy can chime in with some info. I know that Clark has tuned at least one 6MT conversion, so I would assume there are differences. As to wether this is a smart idea or not with a Cobb Stage, I'm not sure and that would probably require a call to Cobb.
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Old 04-02-2005, 06:37 PM   #4
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try searching cobbs forum
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Old 04-02-2005, 11:50 PM   #5
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wow now here is a q that FAQ master can't answer for us!
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Old 04-03-2005, 05:43 PM   #6
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if what you fear would happen were true, then all the cobb users would see huge boost when carrying 3 passengers up hill w/the ac on, and too little boost when say flooring the gas while going downhill.

they do not. the boost control system will adapt to the varying load.
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Old 04-03-2005, 06:24 PM   #7
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thanks for the reply. Well cobb is just one example and it uses factory boost controller. Infact I'll try contact cobb regard this issue and see what's their answer to this.
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Old 04-04-2005, 01:31 AM   #8
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yeah, then post with a reply. good info!!!

...max
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Old 04-04-2005, 02:37 PM   #9
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assuming you want the power advatage in each gear im sure you would tune to maximize as per gear right?
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Old 04-04-2005, 05:48 PM   #10
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The main selling point for cobb is to get a good management for some some what safe all around setup. You can't really get the max potential out of a cobb per say. Anyways, I've called cobb and according to what they have experienced overall nothing will be changed except the faster response from closer ratio setup. The boost on 1st and 2nd might be lower due to the closer ratio (less load) but from 3-5 should be in the same range, if not differ by 3-400 rpms. Of course the power curve will shift a little to the left side.

so I guess don't have to worry about anything.
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