The BMW UUC Digest Volume 2 : Issue 96 : "text" Format Messages in this Issue: Ulf Re: Paucity of BMW computer tuning Wheel wanted ..Style 31 15x7 Re: E34 535i Towing Capacity? Re: E34 535i Towing Capacity? Re: E34 535i Towing Capacity? Re: E34 535i Towing Capacity? Re: <E36> Valve cover replacement thoughts Re: <E36> Valve cover grounding straps? E30 fuel starvation - cornering <E28 Eta> : Hot weather stumbling problem
---------------------------------------------------------------------- Date: Fri, 19 Mar 2004 16:33:21 -0500 From: "carl sewell" <[EMAIL PROTECTED]> To: "BMWUUCDIGEST \(E-mail\)" <[EMAIL PROTECTED]> Subject: Ulf Message-ID: <[EMAIL PROTECTED]> For those of you, like me, who miss those marvelous pronouncements from Ulf, here is Ulf in his P car doing a lap at the N�rburg Ring, pretty long-about 10 min: http://vanadium.prg.dtu.dk/~pmc/andersj/200209_GT3_745.WMV Carl Sewell Charlottesville VA E46 330iPP CCA 151298 ------------------------------ Date: Fri, 19 Mar 2004 16:19:23 -0600 From: "Jamie Howton" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Subject: Re: Paucity of BMW computer tuning Message-ID: <[EMAIL PROTECTED]> That is a very good point, one which I hadn't considered. I guess I will play things very carefully when I start tuning this thing just to be on the safe side. Regards Jamie -----Original Message----- From: Brian Daley [mailto:[EMAIL PROTECTED] Sent: Friday, March 19, 2004 2:30 PM To: [EMAIL PROTECTED] Subject: Re: [UUC] Paucity of BMW computer tuning Jamie, I guess short of going to a standalone system you can do some useful things with that setup. In general I'm not a big fan of tricking the ECU into doing what you want by altering it's sensor inputs. Giving the ECU false information about the operating conditions tends to have undesirable side-effects. Example: It's common practice to use a "calibrated" MAF sensor when installing larger-than-stock injectors in a Mustang. The voltage output of the MAF is basically scaled by stock injector size/new injector size so the ECU thinks there's less air coming in and commands a shorter injector pulsewidth. The net result is that the larger injector at the shorter pulsewidth delivers approximately the same amount of fuel that the stock injector would have given the true airflow values. This works fine, up to a point. The side effect is that it alters the load calculation which has all kinds of consequences, in particular spark advance. Because the ECU is being tricked into thinking much less air is coming in it therefore thinks load is much lower than it really is resulting in too much spark advance which can result in detonation. Brian '94 325ic -----Original Message----- From: Jamie Howton <[EMAIL PROTECTED]> Sent: Mar 18, 2004 7:06 PM To: [EMAIL PROTECTED] Subject: Re: [UUC] Paucity of BMW computer tuning There _are_ other custom tuning options for BMWs. I bought the SMT-6 piggyback computer http://www.perfectpower.com/products/smt6.asp for $335. I only recently got around to installing it in my 95 M3 and haven't had a chance to get it on a dyno yet so it currently isn't altering the fuel mappings at all. Installation was fairly easy and I ran a serial cable into my glovebox so that I can connect a laptop and make adjustments from inside the car. The price was right and if I can pick up a couple of extra HP without blowing anything up, I'll be happy. Regards Jamie Howton 2002 330i 1995 M3 Search the ARCHIVES:http://www.mail-archive.com/[EMAIL PROTECTED] ________________________________________________________________________ __ In memory of Michel Potheau - friend, enthusiast, founder of the BMW CCA. UUC Motorwerks - BMW Performance Fine-tuning and home of the Ultimate Short Shifter - accept no substitutes! 908-874-9092 . http://www.uucmotorwerks.com ------------------------------ Date: Fri, 19 Mar 2004 14:27:30 -0800 From: "BMWBits" <[EMAIL PROTECTED]> To: "Uucdigest" <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]> Subject: Wheel wanted ..Style 31 15x7 Message-ID: <[EMAIL PROTECTED]> I need ONE of the above wheels from a 96 or later 5 or 7 series .Offset shows as IS20 , mfr is H&W They have 12 kind-a pear-shaped holes (or triangles with very rounded corners ) and a clip-in sunken hub cap . Much nicer looking than the flying saucers my 89 750il came with ...and easier to keep clean .. I can supply a digipic to anyone who thinks they may have a match for mine . NO I didn�t wreck one ...I bought three with 4 hubcaps ... Price, location and condition off digest please .... Bill & Shirley Proud Seattle Summers , Tennessee Winters . Long Commute between , ------------------------------ Date: Fri, 19 Mar 2004 18:45:33 -0500 From: Ron Katona <[EMAIL PROTECTED]> To: bmwuuc digest <[EMAIL PROTECTED]> Subject: Re: E34 535i Towing Capacity? Message-ID: <[EMAIL PROTECTED]> Marco Romani wrote: > What are you towing and how far? If it's not that far maybe renting those > monster trucks from Home Despot would be an alternative, I think they have a > hitch mount built in. Otherwise U-haul, or some rental car places rent Ford > trucks. What has 4 wheels, weighs 1900 lb, does 0-60 in 4.7 seconds, has British electrics, and is a rice burner? ;-) I was hoping I could put the front wheels on a dolly and tow the sucker behind the E34 to nearby tracks like VIR and Summit Point (3-4 hours max), and to autocrosses less than a couple hundred miles away. No long hauls like you club racers. Putting two wheels on the dolly means I could swap on those two track wheels before leaving and only have to haul two more wheels in the trunk of the 5er. Should be pretty easy. I just need to find the appropriate hitch setup. Looks like factory or custom are the way to go. -- Ron ------------------------------ Date: Fri, 19 Mar 2004 20:14:59 -0500 From: "Woody" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Subject: Re: E34 535i Towing Capacity? Message-ID: <[EMAIL PROTECTED]> Ron!!! This sounds like at Lotus Elise to me. Tell me you didn't. Woody > What has 4 wheels, weighs 1900 lb, does 0-60 in 4.7 seconds, has British > electrics, and is a rice burner? ;-) > ------------------------------ Date: Fri, 19 Mar 2004 19:18:55 -0800 From: Marco <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Re: E34 535i Towing Capacity? Message-ID: <[EMAIL PROTECTED]> ;-) That's what I thought. I was wondering where you were going to find a 400lb trailer. A dolly makes sense.. Just be prepared to beat the 5er to death. it's a 525, no? If it is maybe you want to sell it and get a used mid 90's ford or chebby pickem up truck. Marco Ron Katona wrote: > Marco Romani wrote: > >> What are you towing and how far? If it's not that far maybe renting >> those >> monster trucks from Home Despot would be an alternative, I think they >> have a >> hitch mount built in. Otherwise U-haul, or some rental car places >> rent Ford >> trucks. > > > What has 4 wheels, weighs 1900 lb, does 0-60 in 4.7 seconds, has > British electrics, and is a rice burner? ;-) > > I was hoping I could put the front wheels on a dolly and tow the > sucker behind the E34 to nearby tracks like VIR and Summit Point (3-4 > hours max), and to autocrosses less than a couple hundred miles away. > No long hauls like you club racers. Putting two wheels on the dolly > means I could swap on those two track wheels before leaving and only > have to haul two more wheels in the trunk of the 5er. Should be pretty > easy. I just need to find the appropriate hitch setup. Looks like > factory or custom are the way to go. ------------------------------ Date: Fri, 19 Mar 2004 20:03:56 -0500 From: "Rob Levinson" <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Re: E34 535i Towing Capacity? Message-ID: <[EMAIL PROTECTED]> ---- Original Message ---- From: [EMAIL PROTECTED] >What has 4 wheels, weighs 1900 lb, does 0-60 in 4.7 seconds, has >British >electrics, and is a rice burner? ;-) Ooh, ooh! I know! But I'm not telling other than to say it is NOT this: http://members.aol.com/rotusrotus/ - Rob ------------------------------ Date: Sat, 20 Mar 2004 00:00:10 -0500 From: Ed MacVaugh <[EMAIL PROTECTED]> To: [EMAIL PROTECTED], [EMAIL PROTECTED] Subject: Re: <E36> Valve cover replacement thoughts Message-ID: <[EMAIL PROTECTED]> I am reinstalling a valve cover that another tech removed. There are two braided jumper wires that appear to have been fastened beneath the engine cover on my wife's 96 328i. I see in the TIS and the Bentley manual where it is important to have these present, but don't know where they go. Anyone? TIA, Ed ------------------------------ Date: Sat, 20 Mar 2004 00:34:55 -0500 (EST) From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Re: <E36> Valve cover grounding straps? Message-ID: <[EMAIL PROTECTED]> Two grounding straps? There was one running from the rear mouting stud of the rear coil pack to the rear most inboard stud holding the cover down. the only other ground strap on my 1993 was attached to a mounting bolt on the front of the head. Marc Marc Plante E36 325i, 220k E36 M3/4, 49k Vienna, VA ------------------------------ Date: Sat, 20 Mar 2004 10:54:17 -0500 From: "Chris Pawlowicz" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Subject: E30 fuel starvation - cornering Message-ID: <[EMAIL PROTECTED]> I don't know if it's because I'm getting better (ha!) or if something is starting to fail, but last summer when I was at the track, after long hard right hand corners, typically in third gear, I was getting fuel starvation brake, downshift to 3rd, through the corner, squeeze the throttle until it was planted on the floor, and as rpm climbed up past 5000+ the car would lose power for a second before 'catching it's breath' 2 years ago it happened a few times but the tank was below 1/4 last year it showed itself when I still had more than 1/2 a tank ..and I then made the mistake of filling up.. after I did *that*, fuel would slosh out of the filler during the tight left handers, and I ended up driving one session in the hot sun breathing gas fumes :( this summer I'm probably going to go with stiffer sway bars and track rubber, so I'm sure this problem will be even worse any suggestions? are there baffles in the tank that can help? chris pawlowicz '89 325i, '99 Z3 2.8 ------------------------------ Date: Sat, 20 Mar 2004 09:41:15 -0800 (PST) From: Brad Couvillon <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: <E28 Eta> : Hot weather stumbling problem Message-ID: <[EMAIL PROTECTED]> UUCers, I bought my '87 528e 5-speed this past September. Even in Louisiana, the temperatures haven't been higher than about 70 or 75 between then and now. . . until just lately. Just yesterday afternoon in about 80 - 90 degree weather, while going from idle to 20 MPH for about 20 minutes, the car started stumbling, idling high (at 1,000 RPM), and losing power when I dug into anything more than 50% throttle. BTW, the somewhat-related items that have been replaced (as in, brand new part installed) in the past year or so include: reference sensor barometric pressure sensor O2 sensor spark plugs air filter I'm not sure about the fuel filter, but I'm doing that in another week anyway. Below is my original post from yesterday that I made to the MyE28.com board. Can anyone offer any insight to this? Here's the link to the post, too, so you can see any replies that have been made: http://forums.mye28.com/e28/messages/100951.html Thanks in advance, Brad "Shifty" Couvillon ******** Let's start from the beginning. My old 528e. It never ran properly above 3,000 RPM, and it had a lot of trouble doing that in the heat. I eventually got an air/fuel ratio gauge, and it determined that, almost exactly at 3,000 RPM, I was leaning out. It was like there was a switch that set the car to lean at 3,000 RPM. In the summer, when the car would get very hot (idling for a while, driving hard, etc), the car would start to stumble and lose power. Sometimes, after idling for a while, then sitting, then getting started back, it wouldn't even be able to rev past about 2,000 or 2500 RPM. It would stumble horribly. I talked to Luvs about a similar problem he was having on his E30 eta, and he had checked a lot of things. He tested the fuel pump, and it was out of spec, electrically, so I think he replaced it. I never had a chance to even test my fuel pump before I nailed the Town Car and parted the car out. Fast forward to today. It's the first very hot day that I've driven the car for an extremely long period of time. "Very hot" means about 85+, probably closer to the low 90s. I drove on the interstate at about 90 for an hour (just under 3,000 RPM) with the AC blowing at full cold on the I blower setting. Then, I got on a four-lane highway and cruised between 55 and 80 with the AC on the same setting. Once I got to town, I had to slow down to about 20 MPH most of the way, hitting stop lights every block. It was at this point that the coolant temp gauge got just past 12:00 (which is weird for this car since it's got new coolant, a good radiator, and one of those loudass cool-down pulleys). Around that time, the car started stumbling and driving rough. If I gave it anything more than about half-throttle, it stumbled very noticeably. When I was a minute or two from my destination, I decided that it was probably a leaking fuel line (I did the fuel lines last night), maybe a hose clamp I hadn't tightened up very well. I parked the car when I got to my destination, popped the hood, and checked every hose clamp I had touched last night. No dice. No leaks; they were all tightened up properly. BTW, while I was in town in the heat with the car idling, the car was idling at an indicated 1,000 RPM, as opposed to its normal 750 - 850 RPM. So, someone tell me what the problem is. Is this another fuel pump problem? I guess I can do the Bentley's electrical tests for the fuel pump tomorrow when I adjust the valves. I hope the pump is out of spec, because at least I will have found the problem. Any other suggestions? I have new vacuum hoses, new fuel lines, and I've checked a lot of things for looseness, leaks, etc. I haven't done any electrical tests, air/fuel ratio tests, or fuel pressure tests, so maybe this is something I can do tomorrow, too. So, what do y'all think? Fuel pump? ********* __________________________________ Do you Yahoo!? Yahoo! Finance Tax Center - File online. File on time. http://taxes.yahoo.com/filing.html ------------------------------ End of [bmwuucdigest] digest(11 messages) **********
