06-10-2018, 03:33 PM | #67 |
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I closed them to about .62. I bought two different tools from the local stores cuz I didn't want to wait for amazon. I also figured the oem M plugs would be gapped better. So the lowest setting I could find at two different stores was .64mm. So I gapped them just enough so that my tool couldn't get in between. So I'm assuming I'm at like .62. I did that only because everyone seems to recommend this from the forum. Otherwise I'd simply leave as gapped from BMW. Idk if BMW gaps them down more or if Bosch makes them to specific spec for BMW. Anyone with knowledge is welcome but that's all I got.
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06-10-2018, 04:35 PM | #68 | |
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I've been doing some research on tuning options these days, still a newbie, but learning. From the website, the BM3 only cost $100 more than Racechip, sounds like a no brainer. But only one thing got me worried. From the threads you posted before, you mentioned less throttle responsiveness with the tune and transmission doesn't like to downshift. Have they solved the issue? Or is it because of the beta version? The main reason I want my car tuned, is because of the turbo lag under 2k rpm in comfort mode, if that can't be addressed with a flush tune, I may give Racechip a try, at least it's cheap and warranty safe. Please let me know have you solved the issue. Or anyone know about mission tuning? Last edited by perry8912; 06-10-2018 at 04:44 PM.. |
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06-11-2018, 02:58 AM | #69 | |
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06-11-2018, 03:24 AM | #70 | |
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06-11-2018, 05:19 PM | #71 |
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12-13-2018, 12:15 PM | #72 | |
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12-13-2018, 12:24 PM | #73 | ||
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12-13-2018, 01:05 PM | #74 | |
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12-13-2018, 07:44 PM | #75 |
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FYI... the plugs in the X5M come from the factory gapped @ .67~.68. Since the tune puts us in M territory, this should be sufficient. I'm no expert but you may get a rough idle at .55.
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12-14-2018, 06:35 AM | #76 |
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You and Maverick put them at about 0.62 but BM3 recommends about 0.51 so I was thinking to just split the difference. Their recommendation isn't specifically for the N63TU but it looks like they recommend that gap on every other motor. I have a message out to them so I'll report back what they say.
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12-15-2018, 03:17 PM | #77 |
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I heard back from BM3 and they said that they recommend the same plug on all of the cars they support - the NGK 97506 gaped to 0.02.... I actually just bought a set of these for about $15 a piece for my F30 which is running JB4 stage 2. I might try them out on the F30 to see how I like them first or I might get click happy and just order the X5M plugs. I'll report back.
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01-30-2019, 03:21 PM | #78 |
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1st off hats off to DuSh for the constant out of box thinking, been hiding in the shadows reading.
Anyway, I'll be the owner of an F15 50i in the next few months it's just hard right now to find the color options I want with the miles and MSport. Regarding the plugs after many hours of research I found out several things: - We know that BMW uses a double platinum plug from the factory which is fine for stock applications - Once we get to a Stage 2 tune we MUST change our plugs. If utilizing an iridium plug (97506) you will have more spark energy vs platinum. It is 6x harder, 8x stronger, and has a 700* higher melting point than platinum. Iridium plugs can last up to 25% longer than platinum. - Iridium spark plugs feature a fine wire center electrode that is designed to conduct electrical energy better and increase firing efficiency which can reduce the required coil voltage by as much as 20-percent. That 20% difference can make or break your missfire issues. Not only do iridium’s properties reduce the ignition voltage requirement considerably they contribute to improving the spread of the flame front in the combustion chamber. Less voltage to fire = more spark energy = better VE - Stock gap is 0.030" which is fine for stock boost levels but nowhere near sufficient for 20+psi. Stage 1 tune can get away with stock gap and stock plugs, but if the plugs have some miles on them you might get missfires. So even before you flash a stage 1 tune replace your plugs. If you feel like you will be going to a stage 2 tune anytime soon I would skip the stock replacement platinum plugs and jump to the NGK 97506 Iridiums gapped at 0.025". Which will be a sufficient gap up to the max 21.7psi on the stock TMAPs. If you get a custom tune that targets 24-26psi (obviosuly with the N20 3.5bar TMAPs) I would definietly close the gap some more to 0.023". - Because iridium is costly, iridium spark plug manufacturers reduce the diameter of the center electrode to as little as 0.5mm. In addition to saving money, like I said the “fine wire” center electrode on iridium spark plugs increases firing efficiency. - Some tuners claim that fine-wire plugs run “hotter” than normal plugs and that you should avoid fine-wire plugs especially in supercharged or turbocharged applications but facts support the exact opposite conclusion. As an example, the supercharged 2018 Dodge Hellcat—which makes 707 hp from its 6.2L Hemi—specs an iridium spark plug. If you want another example, the 350 hp Focus RS turbocharged four banger pushes as much as 25 psi of boost, which also employs a factory iridium plug. Also, if any of you guys come from the N54/N55 realm like me then you know the 97506 is the most run plug across the board for a reason. https://www.oreillyauto.com/shop/b/i...d7/2015/bmw/x5 |
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01-30-2019, 03:43 PM | #79 | |
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I definitely agree with you that for Stage 2 (and probably for Stage 1 too) stock plugs and stock gap is not going to cut it. Issues will appear. Just matter of time. I was fine with stock plugs on Stage 1 until 1 day I was not lol. I bought 97506 this time and am planning to swap them and gap them down. Just need to find time. Please keep us posted with your tune and any dyno, runs or other info you'll get. |
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02-02-2019, 08:29 AM | #80 | |
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02-02-2019, 12:39 PM | #81 | |
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Last edited by DuSh; 02-02-2019 at 01:28 PM.. |
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02-02-2019, 12:46 PM | #82 | |
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She should rip pretty good with the minimal mods I have planned. Goal is minor weight reduction and 11.50s@120 with E30 flash. |
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02-02-2019, 01:28 PM | #83 |
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02-02-2019, 05:45 PM | #84 | |
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Given the cost has now 2x or even 3x now from what it was, I think it's less of an argument to go with M and just fork up the $$ for NGK. I ran them on my AMG and loved them. Glad to have another guy with a real performance mod itch join the F15 club. Also I hope you're not just adding DP and actually adding an exhaust as well? Or removing the muffler like most are doing now.
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02-03-2019, 10:22 AM | #85 | ||||
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02-03-2019, 07:51 PM | #86 | |||||
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02-05-2019, 02:41 PM | #87 | |
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Yeah I feel you on the X5M plugs but being that they are 3x the cost now I can just get the NGK Iridium for $14 each which will last longer and be more keen with higher ethanol mixes. Platinum does not like ethanol, I will probably daily on E30 mix. Catless downpipes is plenty enough, the newer turbo BMW exhaust actually flows really well. The biggest flow restriction is the factory catted downpipes. I can't justify the cost for the gain of a few more hp/tq....let alone the possibility of drone and the obnoxiousness. I have a 535 as my race car: built engine, high stall converter, built trans, single 3.5" aluminum driveshaft, Ford 8.8" rear, bigs and littles, yada, yada.....so I will leave the race car stuff to that. I just want a bad ass quiet cruiser to pull the race car and knock off an 11.50 pass if I want in a 5200# brick. Did a ton of research today on the X5M filters and found some awesome information you can pick them up form Autozone for $29 a pop each side. I found a great cross reference site https://www.pgfilters.com/filters/ where you click on "cross reference" input both L and R X5M part numbers: 13717850056 13717500555 And it cross references out to a much of manufacturers: Federated, Parts Plus, Premium Guard, and Pronto all with the same part number so one of the ones I listed must be the parent company. The BMW part number cross references out to: PA99259L PA99260R Also, list a separate manufacturer: STP with part numbers: SA90211 (L) SA90212 (R) Here is the listing for Autozone STP filter: https://www.autozone.com/external-en...74399_304261_0 Also here is Ebay search result either from searching "PA99259L" or "PA99260R" https://www.ebay.com/sch/i.html?_fro...LH_TitleDesc=0 So now we can save $50 for a set of X5M filters and go down to the local Autozone or order online. Just replace once a year like normal and you're good to go. |
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02-05-2019, 04:38 PM | #88 | |
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P.S. There're also Dinan air filters that flow even better than x5m, and surprisingly they fit lengthwise and widthwise (one of our forum members installed them, but wasn't been able to close the lid), but they are too high and stock lid won't be closed - they need Dinan lid - which goes for $1k lol. if not for the lid issue - I would have gone for them (they are like $130 each). https://www.ebay.com/itm/Dinan-D401-...5.c10#viTabs_0 |
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