05-26-2017, 06:23 PM | #23 | |
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05-27-2017, 03:50 AM | #24 | |
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Tuning is lots of fun, if you not tried it, you should, these cars have lots of potential. As for the issue: think ive just used the wrong mix, at too higher flow, will do some more testing. |
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05-27-2017, 10:01 AM | #25 | ||
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05-28-2017, 01:16 AM | #26 | |
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05-28-2017, 01:22 AM | #27 |
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And yes, I think most use to much meth for no reason... Non CP cars can need a bit of support on fuleing when pushing to 23psi, some don't, its just a case of logging.
If your car doesn't need the extra fuel why pump it in? Just use a 50/50 mix and get benefits of some fuel trim head room and cooler inlet temps support power for long and the cleaning effect of the mix to help clean the engine internals. I only ran 50/50 mix and #5 BMS jets, didn't need a higher mix of meth or the lrger jets - #10 that are supplied by BMS. This supported fuel power at 23psi on the regular 45 degrees C (113 F) days here in Australia with no heat soak/power loss on multiple pulls or long high speed runs. |
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05-28-2017, 01:28 AM | #28 | |
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Selling car as I have choices: 1/ Retire -and move to Spain or back to the UK 2/ Keep working but still move to Spain (I won't consider working in the UK!) 3/ Keep workin but move to US dependant on work oportunties for my wife and I. Anyway, car has to go as they are worth WAY (Too) much in Australia. Will probably go back to a Pcar, a built GT3 or RS- I love light weight cars and rev's!! I have come and gone from BMWS and Pcars a few times now. Will miss easy tuning you get from the JB4 and a turbo car but can't have it always. |
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05-28-2017, 05:55 AM | #29 | |
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So im wondering: 1) Will my engine be ruined from this unexpected cylinder wash (due to running too high doses of meth? 85/15) i only spent a few hours of testing on the higher dose ur20v 2) Could you let me know if i should "take air filter tops and accordion tubes off the turbo inlets" but then should i do something? clean or something? Hope ive not done any permanent damage |
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05-29-2017, 10:24 AM | #30 | ||
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05-29-2017, 12:59 PM | #31 |
F10 1/4 WR: 9.9s / 142.5mph 1/2 WR: 175.5mph
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I don't understand how meth can 'wash' the cylinder walls?? It's flammable and burns - is there some chemical property that's interferes with the alusil?
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05-29-2017, 02:02 PM | #32 | |
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Read somewhere that over fueling especially with meth can destroy the thin film of oil which seals the piston rings to the cylinder, which then causes metal on metal scraping due to the thin film being destroyed temporarily. However i have not used a huge volume of spray, im only on AEM medium sizes jets 500cc each pipe, and i ran 80/20 ish meth mix, BUT soon as i used this set up BANG the road filled with blue smoke ever since. Im now banking on a possible coincidence of a PCV valve being blocked (if i knew where it was or how to unblock it) OR a blown turbo oil seal Done a "by eye" basic pressure test just opening oil cap when engine running and did not seem to be any excess pressure - so im totally lost Also if i take to BMW under warranty, they'll kick me out once they see the ECU's have been clearly opened |
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05-29-2017, 10:16 PM | #34 | ||
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It at the end of this saga it turms out you've done $15-20k of damage to your engine, how will that affect your willingness to meth your car next time?
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05-29-2017, 10:41 PM | #35 | |
F10 1/4 WR: 9.9s / 142.5mph 1/2 WR: 175.5mph
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I am building a whole new engine and will use even more meth |
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05-30-2017, 03:25 AM | #36 | |
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- once your a meth head you don't go back. |
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05-30-2017, 05:49 AM | #37 |
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Have you changed the oil yet? Maybe the oil is saturated with gas.
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05-30-2017, 07:15 AM | #38 |
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Yes, changed the oil, but smoke still coming out, so hard to tell if its the old oil slowly coming out, or the new oil still leaking. Either way i have to find out what started this in the first place
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05-30-2017, 08:19 AM | #39 |
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So you believe you would have had issues with your engine regardless of whether you tuned your car?
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05-30-2017, 10:33 AM | #40 |
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Buddy, im still trying to get to the bottom of this issue, i can see you're against tuning, but going on about hitting rock bottom etc aint helping much - so if you wouldn't mind going to throw stones in a pond for a bit, i'd appreciate it, thanks
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05-30-2017, 01:46 PM | #42 |
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Brother, I hope you get to the bottom of this and find resolution as soon as possible.
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05-30-2017, 02:15 PM | #44 |
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Take the car to an independent to do compression/leak down tests instead of guessing about the ring/piston/block's condition. I'm sensing this is the main concern; rule that out and move on to other potential areas of interest.
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