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Comments
I am looking into a Cold Air Intake which may or may not change the tone a bit.
Any ideas on the CAI?
Sleeper
Oakville, Ontario
I think your exhaust thoughts may have some merit. I think Gibson would do well in obtaining an engineer with that type of imagination. I don't think they have a true engineer on staff.
Live and learn... I'm movin on.
Good chuckle! :shades:
KB
How about installing a new exhaust also?
If you're looking for performance or mileage increase...well, save your money.
I am planning on doing a tune-up on my truck and was wondering what all i should do? Its got 113K miles.
I also want to try to beef up the engine a little. Maybe a cold air intake, headers, and exhaust. Any suggestions on what kind of exhaust will get me loudest sound but stay legal?
Also what else could I get to suck some more power out of that v-6?
Headers and cold intake won't do much for you either I'm afraid. However, gears might.
Sorry if this post isn't what you want to hear.
As far as tuneup replacing the plug and wires is about all it takes in that department.
Essentially you might consider changing the whole rear end. The RPO code in your glovebox will tell you what rear you have whether it be 3.23 3.73 or 4.11. An upgrade to a 4.11 will give you better acceleration off the line while costing you a little more in gas mileage.
I wouldn't recommend a supercharger as the added compression of the forced induction could wreck havoc on a truck with over 100K miles.
The rearend swap might be the most cost effective solution as I'm sure the junkyards have a huge amount of GM rears in their yards.
Check here for rpo codes.
Thanks!
From GMC they cost around $2,700, but I found the actual nav systems cheaper ($1,400) on 3rd party GMC sites, and even found one for $900 on Ebay . On the 3rd party site & Ebay Its the exact 2008 gmc nav system (part numbers match).
I asked the GMC dealership if I purchased it from a GMC 3rd party, would they install it. They told me no and that I have to buy it from GMC directly.
And they also went on to say that there is an antenna (??) that has to be installed also, and that the nav system has to be programmed TO the truck (???)...I'm thinking this was a b.s. line to discourage me from buying it cheaper somwhere else.
Is this true?? Its there big programming process in installing a gmc nav system that ONLY GMC can perform when installing into a new gmc truck?!?!?! am i missing something here?? Is there something else invloved OUTSIDE of simply replacing the existing radio with a new nav system?!?!? Does the back up camera need to be installed also??Can anyone enlighten me here?
Also, pertaining to the gmc stock nav, can you change the view of the screen to show 3/4 view?? So far all ive seen of them is an overview shot, like looking at an actual map? The kind of hand held nav's u plug into the truck lighter, you can show a view at a 3/4 view shot like the view you have driving down the street. Can the GMC nav systems do this?!?! Or are you limited to JUST the over head shot?
Thanks for your time to read this, and any help will be greatly appreciated.
Mark
There is a security system that is tied into the radio and I would believe that the ECU would probably have to be reprogrammed so that the truck knows the stock unit was replaced with the nav unit. Course depending on your relationship with the service manager it could be a minor charge to do the reprogramming.
Check out this site. They do charge a little high for the shipping buy their prices are very resaonable compared to my local Chevy and GMC dealerships sometimes saving me almost 50% on parts. Just enter the GM part number and it will return the description and price. If you buy the part from them your dealership should have no issues installing it.
http://www.gmpartsdirect.com/
Truck does pull fairly well in 55 zones. Pulling in 70 zones is quite a bit tougher, especially in windy conditions with hills. Any suggestions will be greatly appreciated ! thanks.
Never really looked into this too much but I know alot about the new radio from the fact that I work at a customs shop and deal with hooking alot of things up to those new radios.
Part # and source appreciated.
Thanks.
1offroader
Also, have heard different stories about lift kits voiding the factory warranty. What's the real deal with that? If that's true, why do dealers offer the kits installed on some trucks?
Finally, does the lift mess with the ABS/Traction Control?
Thanks in advance.
1offroader
I have changed to a K&N FIPK, HYPERTECH power programmer, a Flowmaster cat back dual exaust w/3" pipes, MSD 8.5mm wires and AC Delco Platinum +4 plugs. Here is what i'm thinking?????Rocker arms,Headders(want to stay emissions legal) BBk or Comp Cams FAST manifold,Throttle body?,Maybe go to an electrick fan and maybe a throttle body spacer.with this setup I have now I get about 17mpg I would like to stay above 12mpg and still haul A%$. Thanks for any help. And I forgot about a SUPERCHARGER!!!
If you really want to haul [non-permissible content removed], sell those mods you have on ebay and go the supercharger route. It will save you a lot of time and money, not affect gas mileage much, and if you do blow your motor it will be a good excuse to get the 5.3 or 6.0.
Last but not least dump those Flowmasters, they have been dyno'd and have shown 7-12 HP loss due to not having enough back pressure which causes loss of lowend torque. A catback from Borla or Corsa will do a lot better. Course you will pay twice what you paid for the Flows.
Good luck!!
Next need to change over to mobil 1 oil see if that does anything for my mileage.. :shades: