scrapen

…..

…...

….

…..

…... Sent from my iPhone using Tapatalk

TB end for L86 is 3.875” vs 3.5” on the L83...hence why the intakes have different part numbers. Sent from my iPhone using Tapatalk

It’s my understanding 2016 came standard with HID’s due to lighting complaints. Maybe they’re just adjusted high from the factory. It happens to me on occasion.

If I remember correctly the brand used by Costco is the only one listed for top tier diesel. They have their own website listing all the brands that meet their standards. Some you have to do some digging for their source like grocery store chains. Around me I think sheetz is the only brand that doesn’t meet top tier for gasoline. Sent from my iPhone using Tapatalk

Top-tier or not US spec USLD should have additives added. GM isn’t the only one having issues with fuel destroying pumps. Sent from my iPhone using Tapatalk

If I had to do it all over again I’d go Texas speed w catted y-pipe. I went with the speed engineering coupled w my corsa and while it sounds great, the rasp gets to me a little bit....although when my windows are up I’ve found it doesn’t bother me. Also had to go to Summit Racing for better clamps after initial test drive.

An oil thread started and was shut down a few weeks back. Now old threads are being dug up for the same. We get it you use brand x, but it doesn’t have to be every post. We are on this forum because we all share that we are enthusiasts and can help each other out with common maintenance and issues. I’d say most of us can make our own adult decisions on what we use for maintenance. Spamming these threads in the end doesn’t make it any fun for any of us when moderators have to treat us like children. Sent from my iPhone using Tapatalk

….. Sent from my iPhone using Tapatalk

Hope to see your results since mine is very similar and I haven't dynoed it yet unfortunately. I drove my truck a couple times before my tune was installed after headers and yes the helicopter sound known as v4 was amplified significantly. The AFM delete will take care of it.

Figured i'd chime on on some of my results before/after and E85 vs 92/93. 2 - 9000 miles - 20.3 mpg per the truck display. (Air raid Jr installed around 5000-5500 w/ Corsa same time, 87 oct with 1 or two tanks of 93) I never did any hand calculations to verify. Installed Headers, Blackbear 91 tune (AFM off), l86 manifold, and added E85 capability. A few weeks ago I went to Tennessee and recorded 5 fill-ups, 3 of which were E85. 7/20 - 9472 - 21.459 - 2.189 (second tank of E85 ran through truck) 8/18 - 9719 - 17.526 - 2.179 E85 8/19 - 10071 - 22.042 - 2.199 E85 8/21 - 10388 - 22.7 - 2.959 (93) 8/24 - 10810 - 22.005 - 2.919 (92 I believe) The last two fill-ups include driving through Smokey Mountains National Park although the last fill-up was mostly highway. I did hand calculations for these tanks. I thought I was getting 17.5 mpg after my first all highway E85 and here it was 16 mpg. The last tank my computer said 20.9 (actual 19.2). I see reading a few posts above that it's not just me seeing the computer discrepancies. Safe to say first 9000 miles it was averaging 19. When I arrived home my computer readout was 23.5. I think it is 23.1 now after a few trips around town. Update 9/20: I noted that odometer was 11111 when I pulled in my driveway on 8/24. Filled up 9/20 @ 11271. Computer said 21.3. Actual 19.8 (23.247 gal) Until I actually go to a dyno and can compare power numbers i'm not sure if E85 is worth the hassle for me. While $1.00 cheaper than premium where I live, it's also out of the way. Cost per mile is about the same in terms of highway driving. Jury is still out to see how the 91 tune averages out with my in town driving. I may try E30 mixes down the road.

….