# Junior tuned the Evo today...

**URL:** <https://forums.speedlife.net/t/junior-tuned-the-evo-today/254446>\
**Category:** Shift518 Automotive\
**Created:** [September 11, 2010, 12:17am UTC](https://forums.speedlife.net/t/junior-tuned-the-evo-today/254446 "2010-09-11T00:17:46Z")\
**Posts on this page:** 1\
**Showing post:** 54

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**Author:** ![jdaniels](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jdaniels/32/6399_2.png) [@jdaniels](https://forums.speedlife.net/u/jdaniels)\
**Post date:** [September 12, 2010, 12:45pm UTC](https://forums.speedlife.net/t/junior-tuned-the-evo-today/254446/54 "2010-09-12T12:45:20Z")

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> [@What car to buy Daily Driver](https://forums.speedlife.net/t/what-car-to-buy-daily-driver/34968/5):
>
> Also have any of you heard of the “black goo”
> 
> It’s something thats come up big on the Z31 forums with Jon who’s been looking at running e85 in his 700+whp Z.
> 
> Some findings on the internet (not that it means much) is many car guys are reporting a black stick goo on their injectors after running e85 for quite some time. Everyone decided it must be the fiberglass or some sort of coating in the tanks that the e85 is eating and circulating throughout the fuel system.
> 
> This wasnt just on Z’s it was on a broad range of cars where people were reporting this

I had a tiny bit on the outside of the stockers, but when I took the blue giants out that I ran for 2+ years they had NONE. The gunk itself is part of an additive in the fuel, there was a gentleman that did a lab test and found that he could recreate it by boiling the fuel until the residue is left behind. The chemical structure was identical to “black goo” but it was clear.

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