When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Is there any info here regarding GLC43 quarter mile times at high altitude. I have the renntech tune and can only manage 13.7 at Bandimere on race gas (100).
I know there is a quarter mile thread but can't find any high altitude info for these cars.
Stock they run 13.3 at 104MPH. I'm guessing those numbers are at Sea Level. Modded I can see one dipping into the 12.9 sec range and around the 108/110mph. With your elevation one would think that you would hit the stock numbers at least; especially being modded. Try again with different settings. Was your traction control completely off and were you in Sport+ mod?
Stock they run 13.3 at 104MPH. I'm guessing those numbers are at Sea Level. Modded I can see one dipping into the 12.9 sec range and around the 108/110mph. With your elevation one would think that you would hit the stock numbers at least; especially being modded. Try again with different settings. Was your traction control completely off and were you in Sport+ mod?
R.K.
Thanks for the reply. Slip from last night. Down to 13.6. Traction control full off (press and hold), sport+, race gas and just switch air filters to K&N. Someone said to expect 1 second slower than stock at Bandimere so I might be doing alright. I know the Renntech tune is pretty mild. For what it is worth, Charger SRT next to me only managed a 12.9 so he is probably asking the same questions.
Thanks for the reply. Slip from last night. Down to 13.6. Traction control full off (press and hold), sport+, race gas and just switch air filters to K&N. Someone said to expect 1 second slower than stock at Bandimere so I might be doing alright. I know the Renntech tune is pretty mild. For what it is worth, Charger SRT next to me only managed a 12.9 so he is probably asking the same questions.
You should buy a dragy, and test it at a flat road somewhere at a much lower altitude. Dragy has proven to be accurate compared to the dragstrip measurements within under 1%.
I think there is something wrong with your renntech tune. Is the renntech tune a piggy back? PIggyback units can sometimes just simply not work because the turbos arent making boost instructed by the piggyback. Your altitude could definitely affect that.
Now if your renntech tune is a full remap, then I would take it up with them, but even then its hard to gauge if its working or not since you do not have any baseline numbers/drag times. Another reason you should have a dragy, and its only $150.
But without knowing the causes, I will say 13.7 is slow. Really slow. When I was using JB1 (now I am on Eurocharge V4), I did 12.7@109mph with 2 additional passengers at like 70% humidity (but sea level). So I would definitely be concerned if I was you, regardless of what the Charger SRT ran.
You should buy a dragy, and test it at a flat road somewhere at a much lower altitude. Dragy has proven to be accurate compared to the dragstrip measurements within under 1%.
I think there is something wrong with your renntech tune. Is the renntech tune a piggy back? PIggyback units can sometimes just simply not work because the turbos arent making boost instructed by the piggyback. Your altitude could definitely affect that.
Now if your renntech tune is a full remap, then I would take it up with them, but even then its hard to gauge if its working or not since you do not have any baseline numbers/drag times. Another reason you should have a dragy, and its only $150.
But without knowing the causes, I will say 13.7 is slow. Really slow. When I was using JB1 (now I am on Eurocharge V4), I did 12.7@109mph with 2 additional passengers at like 70% humidity (but sea level). So I would definitely be concerned if I was you, regardless of what the Charger SRT ran.
Thanks. Def going to get a draggy here pretty soon. Found a local merc performance shop besides the dealer. He said to expect 1 sec slower at bandimere over sea level. Still going to reach out to renntech though.
Forgot to add, there was a glc63s there only trapping 107.
I would simply get a dragy and test somewhere closer to sea level. Or run your G63 and see how fast it goes.
If the G63 goes as fast as your tuned GLC43, then there is probably nothing wrong. The G63 is a really really heavy car and your renntech tune should make it probably atleast NEARLY as fast as your G63 if not faster.
I would simply get a dragy and test somewhere closer to sea level. Or run your G63 and see how fast it goes.
If the G63 goes as fast as your tuned GLC43, then there is probably nothing wrong. The G63 is a really really heavy car and your renntech tune should make it probably atleast NEARLY as fast as your G63 if not faster.
LOL we have a 2015 G63 as well but that is a whole other conversation. All I can say is if you are going to punch it make sure you have both hands on the wheel and are pointed straight....
On the brakes? They run around 119 MPH at 690 ft elevation or a DA of 3,000 ft..
We went together. I'll have to find the slip and post it. Density altitude was probably close to 9,000 feet. Closest track to me that is below 3,000 feet (not DA) is a 6 hour drive. You all need to come to bandimere. You'll lose a second.
I posted this thread to get some info from people who have run at high altitude or Bandimere. I know the times are slow. That's the point. Check out drag times site and do some altitude conversions. The glc63S adjusted for a 9k DA is right in line with what I said above.
Last edited by Bob Meade; Oct 3, 2019 at 06:49 PM.
We went together. I'll have to find the slip and post it. Density altitude was probably close to 9,000 feet. You all need to come to bandimere. You'll lose a second.
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
