TimB Posted January 19, 2005 Report Share Posted January 19, 2005 Thats alot like mine without the box. Mine is made by sportmaster it comes off easy. I haul my dirt bike in the back also. Its nice and very light. Link to comment Share on other sites More sharing options...
fox_forma Posted January 19, 2005 Author Report Share Posted January 19, 2005 Thats alot like mine without the box. Mine is made by sportmaster it comes off easy. I haul my dirt bike in the back also. Its nice and very light. <{POST_SNAPBACK}> How much did your cost? Good to see another fellow biker with an SS Link to comment Share on other sites More sharing options...
BIG LAW MAN Posted January 19, 2005 Report Share Posted January 19, 2005 Umm, it does require premium. <{POST_SNAPBACK}> Ummm, NO it does not. Try reading your manual. Link to comment Share on other sites More sharing options...
zippy Posted January 19, 2005 Report Share Posted January 19, 2005 right from the owners manual. For all except vehicles with the 6.0L V8 (VIN Code N) engine, use regular unleaded gasoline with a posted octane of 87 or higher. If the octane is less than 87, you may get a heavy knocking noise when you drive. If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. Otherwise, you might damage your engine. A little pinging noise when you accelerate or drive uphill is considered normal. This does not indicate a problem exists or that a higher-octane fuel is necessary. If you are using 87 octane or higher-octane fuel and hear heavy knocking, your engine needs service. If you have the 6.0L V8 (VIN Code N) engine, use premium unleaded gasoline with a posted octane of 91 or higher for best performance. You may also use middle grade or regular unleaded gasoline rated at 87 octane or higher, but your vehicle's acceleration may be slightly reduced. If the octane is less than 87, you may get a heavy knocking noise when you drive. If this occurs, use gasoline rated at 87 octane or higher as soon as possible. Otherwise, you might damage your engine. Link to comment Share on other sites More sharing options...
BIG LAW MAN Posted January 19, 2005 Report Share Posted January 19, 2005 right from the owners manual. For all except vehicles with the 6.0L V8 (VIN Code N) engine, use regular unleaded gasoline with a posted octane of 87 or higher. If the octane is less than 87, you may get a heavy knocking noise when you drive. If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. Otherwise, you might damage your engine. A little pinging noise when you accelerate or drive uphill is considered normal. This does not indicate a problem exists or that a higher-octane fuel is necessary. If you are using 87 octane or higher-octane fuel and hear heavy knocking, your engine needs service. If you have the 6.0L V8 (VIN Code N) engine, use premium unleaded gasoline with a posted octane of 91 or higher for best performance. You may also use middle grade or regular unleaded gasoline rated at 87 octane or higher, but your vehicle's acceleration may be slightly reduced. If the octane is less than 87, you may get a heavy knocking noise when you drive. If this occurs, use gasoline rated at 87 octane or higher as soon as possible. Otherwise, you might damage your engine. <{POST_SNAPBACK}> Thanks Zippy. I have been using BP Amoco 87 since day one and have had zero knocking. Link to comment Share on other sites More sharing options...
zippy Posted January 20, 2005 Report Share Posted January 20, 2005 the stock programming is pretty light, but you shouldn't hear any spark knock anyway. it's going to begin pulling timing right away and go to the low octane table not long after that. all you're doing is giving up power. Link to comment Share on other sites More sharing options...
AWDGM Posted January 20, 2005 Report Share Posted January 20, 2005 the stock programming is pretty light, but you shouldn't hear any spark knock anyway. it's going to begin pulling timing right away and go to the low octane table not long after that. all you're doing is giving up power. <{POST_SNAPBACK}> And gas mileage! Running 93 will get better gas mileage because the tune will stay at it's higher more efficient octane table. The cost should be a wash, making the extra power free. Why run 87???? Butch 02 Sierra Denali Link to comment Share on other sites More sharing options...
CoolBlueSS Posted January 20, 2005 Report Share Posted January 20, 2005 I get 14-15 in town, and 16-17 highway. Bone stock, 27K miles. It's actually better than my old 94 Chevy. I want one of these bed covers. Click Link to comment Share on other sites More sharing options...
marc_w Posted January 21, 2005 Report Share Posted January 21, 2005 Rough crowd here... Bone stock, I couldn't get much better than 16-16.5mpg on the DIC, no mattehere WHERE or HOW I drove. (city, highway, heavy, light. etc.) Over time I added/did a number of mods, which my my mileage up considerably. It's been over a year, so I don't recall exact numbers for each mod anymore... The mods were: - Good low resistance plug wires. Cleans up/smooths out the lower rpm, light throttle acceleration, just a bit. - Cotton-gauze drop-in air filter. I'm pretty stubborn about the stock airbox. I don't think any other box on the market is as effient at the stocker with a drop in filter. - E-fans. Free's up power. - B&B dual exhaust. I was very surprised when I gained lowend power from a dual exhaust system. It takes less pedal to cruise around and get up the hills around here. With these mods here, I was getting over 21mpg scanned on the DIC, on the same old daily route I used to get 16.5mpg on. Things that will HURT mileage: - Long idle/warmup times. - Changing shift points from factory settings. (or using tow/haul a lot). - Tight LSA cams. (I'm now around 18mpg tops) Link to comment Share on other sites More sharing options...
fox_forma Posted January 21, 2005 Author Report Share Posted January 21, 2005 Marc that is good info. Which mod gave you the best results. I dont have all that much money right now to do everything but would like to start somewhere. Which mod would you go with first then etc. Link to comment Share on other sites More sharing options...
CoolBlueSS Posted January 21, 2005 Report Share Posted January 21, 2005 Wow! That sounds pretty good. What kind of plug wires did you use? Link to comment Share on other sites More sharing options...
marc_w Posted January 21, 2005 Report Share Posted January 21, 2005 Man.. I got bit three times today... Mouse moves off the page, I hit the backspace and I lose everything I wrote. I ran Taylor Thundervolts before, but I didn't have any luck with them. I'm now running MSD8.5's. I like them a lot. fox - The order I installed things, and gains that I can remember: Plug wires and drop-in filter. This got me up into the lower 17's... They're a good start for like ~$100 or so. Then came the B&B exhaust. This got me into the lower 18's. ~$600 I completely forgot, but the same weekend I installed e-fans, I also did some very basic tuning with HPTuners. I modified my injector flow rate table, which may have skewed my DIC indicated mileage. I felt the truck rev much more freely with the e-fans, and in general it felt like it got around a little easier. Mileage was up in the 19's consistantly, but sometimes as high as low 21's on one or two occasions where I really took it lightly. Almost all of my driving is on backroads with speeds between like 35 and 45mph... so I spend a lot of time at very low RPM in lockup - where the truck is most efficient. My actual highway/interstate mileage at 70mph always dropped lower than those bests. Usually my hightest was in the 18's. Once I added a 220/220 112 cam to the motor, my mileage when right down to about mid 17's. It has since come back up into the 18's since I got the smaller 210/218 112 in there. Just last night I made some tuning changes that (if anything) gave my DIC back all the milage accuracy it has as stock (was it accurate to begin with?) I'll have to check it again these next few days to see how they compare. Link to comment Share on other sites More sharing options...
LOUI1313 Posted January 22, 2005 Report Share Posted January 22, 2005 I have always heard that Exhaust and Headers will increas Gas milage. I don't have any personal experence with these, but check it out, couldn't hurt. Good luck. Link to comment Share on other sites More sharing options...
TexaSS Posted January 22, 2005 Report Share Posted January 22, 2005 right from the owners manual. For all except vehicles with the 6.0L V8 (VIN Code N) engine, use regular unleaded gasoline with a posted octane of 87 or higher. If the octane is less than 87, you may get a heavy knocking noise when you drive. If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. Otherwise, you might damage your engine. A little pinging noise when you accelerate or drive uphill is considered normal. This does not indicate a problem exists or that a higher-octane fuel is necessary. If you are using 87 octane or higher-octane fuel and hear heavy knocking, your engine needs service. If you have the 6.0L V8 (VIN Code N) engine, use premium unleaded gasoline with a posted octane of 91 or higher for best performance. You may also use middle grade or regular unleaded gasoline rated at 87 octane or higher, but your vehicle's acceleration may be slightly reduced. If the octane is less than 87, you may get a heavy knocking noise when you drive. If this occurs, use gasoline rated at 87 octane or higher as soon as possible. Otherwise, you might damage your engine. <{POST_SNAPBACK}> Thanks Zippy. I have been using BP Amoco 87 since day one and have had zero knocking. <{POST_SNAPBACK}> you said thanks like zippy just proved you right or something. it does recommend using premium fuel Link to comment Share on other sites More sharing options...
383ss Posted January 23, 2005 Report Share Posted January 23, 2005 he DID prove him right. it does not REQUIRE premium. I have also tested gas mileage in the same conditions with 87/89/91 and there was no change. Link to comment Share on other sites More sharing options...
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