# I told you guys my SR leaned out!! oh no.. **URL:** \ **Category:** SON240sx Automotive\ **Created:** [May 27, 2006, 9:26pm UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378 "2006-05-27T21:26:53Z")\ **Posts on this page:** 20\ **Page:** 2
**Author:** ![Sasha\_SG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sasha_sg/32/5477_2.png) [@Sasha\_SG](https://forums.speedlife.net/u/Sasha_SG)\ **Post date:** [May 29, 2006, 8:29am UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/21 "2006-05-29T08:29:51Z")
> [@G-E](#): > > the ideal colour for plugs is like a very light mocha > > research plugs and what they mean, you’ll find you can tell a lot about your engine by pulling them, also check for variation between cylinders not on a turbo car a turbo cars plugs will always be dark dark brown - usually black ---
**Author:** ![s13Junkyard](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/s13junkyard/32/5502_2.png) [@s13Junkyard](https://forums.speedlife.net/u/s13Junkyard)\ **Post date:** [May 29, 2006, 11:40am UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/22 "2006-05-29T11:40:16Z")
dont throw parts at your problem figure out what it is first ---
**Author:** ![Jedi\_Car\_Fan](https://avatars.discourse-cdn.com/v4/letter/j/b9e5f3/32.png) [@Jedi\_Car\_Fan](https://forums.speedlife.net/u/Jedi_Car_Fan)\ **Post date:** [May 29, 2006, 12:09pm UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/23 "2006-05-29T12:09:40Z")
I highly suggest removing your ECU… pop it open and check out if it has been “chipped” If you got a Mines ECU those are known to run lean so if indeed its a mines… pitch it and get a stock ECU ---
**Author:** ![S13GG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/s13gg/32/5506_2.png) [@S13GG](https://forums.speedlife.net/u/S13GG)\ **Post date:** [May 29, 2006, 12:53pm UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/24 "2006-05-29T12:53:56Z")
> [@S13GG](#): > > and a Z32TT fuel filter? and this^? ---
**Author:** ![alesserfate](https://avatars.discourse-cdn.com/v4/letter/a/f6c823/32.png) [@alesserfate](https://forums.speedlife.net/u/alesserfate)\ **Post date:** [May 29, 2006, 8:38pm UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/25 "2006-05-29T20:38:43Z")
OK GUYS today i took a turbo coupler, made a plastic plug on the end and fitted a pressure gauge 0-15psi very accurate and used a bycicle pump and hooked it up to the pipe that goes to the turbo outlet, hey guess what, its leaking out ? and where ? ok hooked itup passed the bov, still pressure doesnt go up, so than i hooked it up past the intercooler and hey it wen tup it drops slowly like 5-10 seconds for 1psi to drop but that wouldnt be considered a vacuum leak ? too insignificant, anyway, so i figured it’d be my cooler so i plugged one end, plugged stock bov line, hooked up to the inlet and it didnt hold, i popped it out and the stock flange of one of the cast pipes on the intercooler is CRACKED, has a huge crack and leak marks, THATs WHY IT WAS SO LAGGY AND I COULDNT DRIFT IT, but i still dont see how it would makethe car lean out, wouldnt it make it rich instead ? WTB SMIC SR the pipe piece or the whole assembly… lmk… ---
**Author:** ![alesserfate](https://avatars.discourse-cdn.com/v4/letter/a/f6c823/32.png) [@alesserfate](https://forums.speedlife.net/u/alesserfate)\ **Post date:** [May 29, 2006, 9:49pm UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/26 "2006-05-29T21:49:06Z")
![http://img217.imageshack.us/img217/21/dsc043882dn.jpg](http://img217.imageshack.us/img217/21/dsc043882dn.jpg) ---
**Author:** ![blu2fourty](https://avatars.discourse-cdn.com/v4/letter/b/9fc348/32.png) [@blu2fourty](https://forums.speedlife.net/u/blu2fourty)\ **Post date:** [May 30, 2006, 1:47am UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/27 "2006-05-30T01:47:16Z")
use jb weld to fix that crack. you can get it a ct ---
**Author:** ![Jedi\_Car\_Fan](https://avatars.discourse-cdn.com/v4/letter/j/b9e5f3/32.png) [@Jedi\_Car\_Fan](https://forums.speedlife.net/u/Jedi_Car_Fan)\ **Post date:** [May 30, 2006, 6:49am UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/28 "2006-05-30T06:49:24Z")
> [@blu2fourty](#): > > use jb weld to fix that crack. you can get it a ct JB Weld is for hack jobs… I suggest cleaning it extremely well and have someone weld it proper. ---
**Author:** ![AnDrEw](https://avatars.discourse-cdn.com/v4/letter/a/f19dbf/32.png) [@AnDrEw](https://forums.speedlife.net/u/AnDrEw)\ **Post date:** [May 30, 2006, 9:06am UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/29 "2006-05-30T09:06:08Z")
vlad if its not aluminum I can weld it up for you. I don’t have the welder with me tho at the moment. But the offer is there if you have access to a mig. Andrew. ---
**Author:** ![alesserfate](https://avatars.discourse-cdn.com/v4/letter/a/f6c823/32.png) [@alesserfate](https://forums.speedlife.net/u/alesserfate)\ **Post date:** [June 1, 2006, 6:46pm UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/30 "2006-06-01T18:46:28Z")
ok guys i replaced my intercooler, it now runs rich on idle, but still lean when i floor it, in fact, it misses even more around 4000rpm, my blitz bov leaks so i made a plate and covered up the flange (not it doesnt leak i pressure tested it) and I tried to use my stock but i pressure tested it and it leaks as well ? wtf m8 ? I NEED TOO BORROW SOMEONES BOV FOR SUNDAY AND POSSIBLY A FPR!!! OMGWTFBBQ… ---
**Author:** ![Uniac](https://avatars.discourse-cdn.com/v4/letter/u/34f0e0/32.png) [@Uniac](https://forums.speedlife.net/u/Uniac)\ **Post date:** [June 1, 2006, 6:54pm UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/31 "2006-06-01T18:54:15Z")
stock bov’s are made to open at idle to bypas the turbo… which is why it leaks. as for the blitz no idea. if you’re missing around 4000 gap your plugs down to .8mm instead of the 1mm they are speced at. You’re blowing out the spark due to crappy worn out coil packs…the rb does it all the time. ---
**Author:** ![Jedi\_Car\_Fan](https://avatars.discourse-cdn.com/v4/letter/j/b9e5f3/32.png) [@Jedi\_Car\_Fan](https://forums.speedlife.net/u/Jedi_Car_Fan)\ **Post date:** [June 2, 2006, 4:48am UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/32 "2006-06-02T04:48:17Z")
> [@alesserfate](#): > > ok guys i replaced my intercooler, it now runs rich on idle, but still lean when i floor it, in fact, it misses even more around 4000rpm, my blitz bov leaks so i made a plate and covered up the flange (not it doesnt leak i pressure tested it) and I tried to use my stock but i pressure tested it and it leaks as well ? wtf m8 ? I NEED TOO BORROW SOMEONES BOV FOR SUNDAY AND POSSIBLY A FPR!!! OMGWTFBBQ… Dude… have you removed your ECU, opened it up yet and confirmed whether or not its a chipped/re-tuned ECU ? “most” companys when they retune an ECU will alter the Ignition Maps from 4000rpm on and sometimes even Fuel Maps from 4000rpm on (MINES for example) well in japan… when the ECU is tuned, its normally tuned on 100 octane… so the SECOND you put in 93/94 octane over here, the ECU will lean out a bit for starters, and if the tune is already on the lean side, you’ll lean out even more. so if I was you, I would take 5 mins out of my busy day, remove the ECU and pop it open because like I said before, if for any reason you have a Mines ECU they are complete JUNK! ---
**Author:** ![S13GG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/s13gg/32/5506_2.png) [@S13GG](https://forums.speedlife.net/u/S13GG)\ **Post date:** [June 2, 2006, 7:14am UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/33 "2006-06-02T07:14:28Z")
> [@Jedi\_Car\_Fan](#): > > [ > > well in japan… when the ECU is tuned, its normally tuned on 100 octane… so the SECOND you put in 93/94 octane over here, the ECU will lean out a bit for starters, and if the tune is already on the lean side, you’ll lean out even more. > ! Jeff you neglected to mention that the JDM rating system for octane is different, I think they use RON octane where as we use (RON+MON)/2=PON [http://www.btinternet.com/~madmole/Reference/RONMONPON.html](http://www.btinternet.com/~madmole/Reference/RONMONPON.html) 100 RON octane = 95.8 PON ---
**Author:** ![Jedi\_Car\_Fan](https://avatars.discourse-cdn.com/v4/letter/j/b9e5f3/32.png) [@Jedi\_Car\_Fan](https://forums.speedlife.net/u/Jedi_Car_Fan)\ **Post date:** [June 2, 2006, 8:07am UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/34 "2006-06-02T08:07:25Z")
> [@S13GG](#): > > [quote=Jedi\_Car\_Fan][ > > well in japan… when the ECU is tuned, its normally tuned on 100 octane… so the SECOND you put in 93/94 octane over here, the ECU will lean out a bit for starters, and if the tune is already on the lean side, you’ll lean out even more. > ! Jeff you neglected to mention that the JDM rating system for octane is different, I think they use RON octane where as we use (RON+MON)/2=PON [http://www.btinternet.com/~madmole/Reference/RONMONPON.html](http://www.btinternet.com/~madmole/Reference/RONMONPON.html) 100 RON octane = 95.8 PON[/quote] Yes they use RON and not Octane but their 100 RON (or 95.8 Octane) is Regular to them as to where we only get 87 Octane as Regular So what I meant more so was that ECUs tuned in Japan (like your blitz tune) are tuned on 100 RON atleast “if not higher” ---
**Author:** ![Uniac](https://avatars.discourse-cdn.com/v4/letter/u/34f0e0/32.png) [@Uniac](https://forums.speedlife.net/u/Uniac)\ **Post date:** [June 2, 2006, 2:29pm UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/35 "2006-06-02T14:29:21Z")
ultra 94 from sunoco is 99ron. ---
**Author:** ![spd-dmn](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/spd-dmn/32/5513_2.png) [@spd-dmn](https://forums.speedlife.net/u/spd-dmn)\ **Post date:** [June 2, 2006, 3:47pm UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/36 "2006-06-02T15:47:25Z")
100RON is definitely not regular. 95 is regular, 98 is better, 100 is usually the best. Maybe there is higher but I haven’t heard of or seen it at typical gas pumps. ---
**Author:** ![alesserfate](https://avatars.discourse-cdn.com/v4/letter/a/f6c823/32.png) [@alesserfate](https://forums.speedlife.net/u/alesserfate)\ **Post date:** [June 2, 2006, 10:25pm UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/37 "2006-06-02T22:25:20Z")
sunday is track and today my car got alot worse, first of all it boost creeped to about 20psi so i was like ok shit and unplugged my stock boost controller sensor whatever u wanna call it and just plugged directly from the pipe to the wastegate actuator, ok yea its 7psi, now between 3000 and 4000rpm my car feels like its gonna stall out, what the hell, any ideas ? tomorow im planning to change my plugs and try another ecu, anyone have an ecu they can lend me for the weekend please ? it would be greatly appriciated. thanks! ---
**Author:** ![DTS](https://avatars.discourse-cdn.com/v4/letter/d/8491ac/32.png) [@DTS](https://forums.speedlife.net/u/DTS)\ **Post date:** [June 3, 2006, 8:02am UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/38 "2006-06-03T08:02:03Z")
[quote=“Jedi\_Car\_Fan”"] > [@alesserfate](#): > > “most” companys when they retune an ECU will alter the Ignition Maps from 4000rpm on and sometimes even Fuel Maps from 4000rpm on (MINES for example) > > well in japan… when the ECU is tuned, its normally tuned on 100 octane… so the SECOND you put in 93/94 octane over here, the ECU will lean out a bit for starters, and if the tune is already on the lean side, you’ll lean out even more. > > so if I was you, I would take 5 mins out of my busy day, remove the ECU and pop it open because like I said before, if for any reason you have a Mines ECU they are complete JUNK! Higher octane will not make you run leaner or richer, it will not affect anything at all to do with your air fuel ratios. it will just prevent detonation since it burns slower and takes more to set it off. The only problem a Mines ecu and 91 octane gas could have is that they advance the timing maps on them which can give you bad detonation with the wrong gas. ---
**Author:** ![alesserfate](https://avatars.discourse-cdn.com/v4/letter/a/f6c823/32.png) [@alesserfate](https://forums.speedlife.net/u/alesserfate)\ **Post date:** [June 3, 2006, 12:11pm UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/39 "2006-06-03T12:11:05Z")
PROBLEM SOLVED, it was the MAFS, it was plugged up with stuff, i never though mafs would cause it to just stutter at specific rpm, but hey now you all know, on the way to the solution i fixed all the boost leaks and configured all the vacuum lines properly, and pressure checked all the lines and now I KNOW that its all running properly, thanks for all the great info guys… if youw anan know how to clean mafs just spray sensor-safe brake cleaner onto a q-tip and wipe your mafs uber gently (pull it off the cylinder obviously using 2 screws on top) and clean it, than let it air dry off… thanks alot guys… ---
**Author:** ![Theo23](https://avatars.discourse-cdn.com/v4/letter/t/43a26b/32.png) [@Theo23](https://forums.speedlife.net/u/Theo23)\ **Post date:** [June 3, 2006, 12:27pm UTC](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378/40 "2006-06-03T12:27:53Z")
congrats man, glad to see you got her figured out. [Previous page](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378.md?page=1) [Next page](https://forums.speedlife.net/t/i-told-you-guys-my-sr-leaned-out-oh-no/96378.md?page=3)