Expensive and additional upgrades required, but lots of power with little lag, scaleable, and I've heard great things.
I'm currently running E-85 with a Terminator2 custom tune, Hahn IC, DDM IC pipes, Solo HF cat, 3" Magnaflow exhaust, and K&N drop in filter. I'd like to get around 400whp.
The 2871 with E85 will get you 400whp, anything over that and really you want to be thinking about having some engine work done for longevity. That 400whp area on a Kappa is the level at which we recommend it.
Between me, Miller, DDM Dave, Terminator and 40rty
You have alot of people who really like their 2871
and
have had zero issues with it
[Mine has 18months of use]
On meth or E47, it's like a Raped Ape
not that I condone the raping of Apes
But if I did, it would be with a 2871 Turbo'd sky
:jester:
With the LNF being direct injection, the fuel is not sprayed over the intake valves.
The rest of the system shares parts with the Flex fuel HHR. As such, GM does not sell E85 resistant Valve seals.
The only time you might remotely want to consider those, is if you add a 5th injector, but so far, that has not been an issue for the guys running that either.
I highly recommend E-47 over E-85 for fueling. Best of both worlds in my opinion. I raced my GXP Coupe on it all last year and it ran strong all season long!
We have some new EFR bolt on turbocharger solutions in the WERKS, contact me for details on these
One of the things I like about the WR-3 over the 2871 is that it has a BPV instead of having to install an external BOV. My understanding is that our MAF doesn't always get along well with BOVs, and BPVs tend to be more efficient and keep the turbo spooled. I'm not super knowledgeable about the inner workings of turbos so I may be wrong.
On a side note, is there any way to approximately determine turbo lag, say, based on the sizes of the compressor and turbine?
For the fuel injector seals, You have to buy the whole kit, but it is cheap LNF Fuel Injector Seal Kit 217-3425 12633374 12653395
(You only need the black ones)
As far as the BPV vs BOV
Good tuning will make that a non issue and you can alway recirculate it.
One EFR install added a synapse BOV just for the sound
It's simple if you have an E85 gas station close by.
You just put in equal amounts of both.
The only inconvenience is that you need to swipe your credit card twice.
Out tanks taks almost 13 gallons.
So most of the time I put in 6 gallons of each. [93 Octane and E85]
If I am going on a long trip and am unsure if there will be E85, I bring my laptop and use HPTuners to flip to a 93 Octane tune if needed.
One thing I noticed is that when you blend either 91 or 93 Octane, you still get E47
but
When you use 93 Octane, the blended Octane results in one more octane =99
91 and E85 results in 98 Octane
Interesting calculator.
The bottom calculator says "Trying to replace premium gas in a non-flexfuel vehicle?"
What effect or issues will we have using this mixture in our non-flexfuel Skys? It shows using E85 and regular gas will get 96 octane. That would be cheaper than using premium gas. But are there any problems with rubber hoses, etc?
Our car shares many parts that the flex fuel compliant HHR has.
At the moment, as far as anyone knows, it should only be the Fuel Injectors that are the issue.
I'm kinda leaning towards the WR-3. It seems that would give me a little more headroom if I decide I want more power in the future. I just wish I knew what kind of lag I'd be looking at...
So I ended up going with a 6258 EFR. I wanted the 6758 but they are currently on backorder for an indefinite period of time. I hope it's worth the money I spent and gives me a couple more horses.
I'll post my reaction and thoughts once it's installed.
I don't see that being the case.
The 6258 has the same power as the 2871. It just gets there slightly different and has the built in BPV so no need for the BOV. The Billet parts makes it spool quick but it maxes at 44lbs/min of airflow
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