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  • R.G.'s Avatar
    Today, 04:24 PM
    R.G. replied to a thread Single Turbo? What I need to know in N54
    It's been a while but I believe it's the temp issues that roasts the OEM O2s OEM: https://www.boschautoparts.com/en/auto/oxygen-sensors/wideband-af-oxygen-sensors?partID=17102 Again, been a while (thankfully) but the ADV's are just LSU4 sensors adapted to our platform. Designed for higher operating temps. http://www.bosch-motorsport.com/media/catalog_resources/Lambda_Sensor_LSU_49_Datasheet_51_en_2779147659pdf.pdf Edit: No experience w bottom mounts but I access my O2s from wheel well. Takes me 15 minutes.
    12 replies | 107 view(s)
  • subaru335i's Avatar
    Today, 04:20 PM
    subaru335i replied to a thread GC update in N54
    I guess if you are talking about the same size tire it looks like you are right, bias ply is lighter than a radial. It seems like usually when my friends have switched to full bias ply slicks the tires end up being taller and wider too, and for a lot of them for whatever reason they don't end up being faster unless they have WAAAY too much power for drag radials.
    23 replies | 378 view(s)
  • Sticky's Avatar
    Today, 04:16 PM
    Sticky replied to a thread Fab Factory intake manifold in N54
    Sounds like a good deal there gentlemen...
    10 replies | 297 view(s)
  • Sticky's Avatar
    Today, 04:04 PM
    Sticky replied to a thread GC update in N54
    That's not correct from what I've read.
    23 replies | 378 view(s)
  • subaru335i's Avatar
    Today, 04:00 PM
    subaru335i replied to a thread GC update in N54
    Bias ply are also quite a bit heavier IIRC so more unsprung weight and more rotating inertia which isn't good. You would have to be really hurting for traction and have a lot too much power for the bias ply to really be better than the DR's for a lot of cars.
    23 replies | 378 view(s)
  • foe516's Avatar
    Today, 04:00 PM
    CES is supposedly coming out with steedspeed twin scroll bottom mount kit. probably a lot cheaper than motiv. thats the one i would get hands down, one of the best manifold makers out there.
    12 replies | 107 view(s)
  • Sticky's Avatar
    Today, 03:39 PM
    Sticky replied to a thread GC update in N54
    It isn't necessarily but bias-ply is softer and absorbs some of the shock but you need to run four all the way around and they are not as stable on the top end.
    23 replies | 378 view(s)
  • Carl Morris's Avatar
    Today, 02:00 PM
    Carl Morris replied to a thread GC update in N54
    Also it seems like the bias ply kinetic coefficient of friction is much better. Even when they are slipping a little, they are still sticking. So they can absorb some shock that way as well. With radials once they slip more than just slightly they are gone until you let off. Combine radials with a light flywheel and the "bog or burn" line becomes very thin.
    23 replies | 378 view(s)
  • SPR12's Avatar
    Today, 01:51 PM
    I went on the other M3 boards and found as follows: REARS max 305 on an 11" - There is a statement to not go more than 20mm between f/r for stability control so staying with a 295 given 275 front is suggested. 19x10.5 +22 w. PS2's 295/30/19 no rub; 19x11 +33 w. Nitto Invo 305/30-19 no rub; 19 x 11 et 30 w. Bridgestone RE-11 305/30/19 no rub; 19x11 et25 with 295/30 rubs, 20 x 11 +29 w. Pirelli PZero Nero 305/25/20 no rub; FRONTS max 275 on a 10" 19x10 et20 w. PSS 275/30 no rub; 19x10 et20F w. Hankook Ventus V12 Evo 275/30 F - occasional full lock lowspeed turns on the bottom of the front fender liner.
    1 replies | 8 view(s)
  • A4RingedONE8T's Avatar
    Today, 01:33 PM
    Sorry I'm late seeing this post, only found it googling "Fab Factory Intake Manifold" making sure I hadn't missed any contact regarding our manifolds. Glad all is well and the car is up and running. While pretty much everyone that doesn't have one of my manifolds will say it heat soaks and just increases IAT's, this is exactly the opposite as it actually does. People will always find a way to talk shit when they really know nothing or have any experience with what they are referencing. Sitting in extended stop and go traffic, intake air temps over stock will increase a MAX of 8-10 degrees that I have seen. a short 3-5 min ride in open air and temps will be back to down, and IAT's LOWER than with a factory manifold. Why? The manifold is taking heat out of the charge air, the stock plastic manifold isn't dissipating anything, it's just passing the heat along. Heat coming back into the manifold from the head, :bs: Eric has my 4th N54 manifold I built, and my first with port injection which is fitted on the bottom side. It uses a sheet plenum rather than the full billet design I have now. Due to machining restraints, the inlet to the plenum had to be shorter on the billet version which also allows more charge pipe room. Eric's manifold extends forward another 1.5" roughly and the 90* silicone directly onto my throttle adapter is really the only choice for fitment. Then why don't you have one? Scared by the list price? Shoot me an email, happy to work with customers that want one of my manifolds and openly post about it. Shawn@fab-factory.com :handgestures-thumb: Thanks everyone for your comments and feedback -Shawn-
    10 replies | 297 view(s)
  • BQ@BQTuning.com's Avatar
    Today, 01:30 PM
    Just an update. Car has been in the shop since last week Thursday. We had an issue with the rear inlet end as it wasn't clearing the wastegate after the 90 degree bend. The ID needed to be reduced after the bend to at least 2" as 2.5" was too big. Not sure if this is just a Z4 thing as the rear turbo for the Z4 is the same as the 1 series. Just got the inlet end parts in yesterday to fix this though. The front inlet hooked up beautifully no issue. Was able to also relocate the original coolant tank to the driver side. I wanted everything on the plumbing to be OEM, and was not settling for rerouting the heater return line. Waiting for a heater return exchange adapter to come from German. The car may come out this week with the plumbing rigged just to get the car running on the road until the plumbing part comes in from Germany.
    24 replies | 3097 view(s)
  • cloud9blue's Avatar
    Today, 01:30 PM
    Anything particularly wrong with running pump gas aside from the lower power output? 500whp is more than enough for my intended goal. I am not insane like the rest of you, lol. I run a light mix of e85 (e30-e40) every now and then on and off track. Figure it cleans up the timing and lower the EGT a bit, which can't hurt. WMI is a no no for me. Too many points of failure for that on road course, I would rather run full e85 and a proper PI if I really want more power.
    12 replies | 107 view(s)
  • Terry@BMS's Avatar
    Today, 01:23 PM
    In terms of road racing reliability you have a valid point, I don't have a lot of experience with that aspect. Still, not having port injection is going to kill you. I presume also no WMI? Are you willing to use unleaded race gas full time (in race mode) rather than E85? On the ADV sensors anything I say will probably be misinterpreted so I'll leave others to share their experiences with them. I've had no issues with the NGKs though on our various applications.
    12 replies | 107 view(s)
  • cloud9blue's Avatar
    Today, 01:20 PM
    Appreciate the honest input, Terry. Would love to hear the specific problems that people have with the ADV and the reasons for your preference with the NGK (haven't heard much about that before, but again, I didn't quite followed the O2 discussion that went on the last two years until just recently). I agree twins would be a cheaper and easier solution for my power goal. But the issue comes down to reliability. I have yet to see a hybrid twins that last for people who spend decent amount of time on road course. The wastegate will just wear out again eventually and rattle like a mofo, just like the stock ones on mine. And the reliability of the CHRAs on these twins are still bit of his or miss even after all these years. That's the reason I am set on ST instead of twins.
    12 replies | 107 view(s)
  • Terry@BMS's Avatar
    Today, 01:16 PM
    Terry@BMS replied to a thread GC update in N54
    When you open the log you can compare FF to where it was previously when boost was on target. Were you running a really low map for some time where FF had to learn up, then switched to a higher map?
    23 replies | 378 view(s)
  • cloud9blue's Avatar
    Today, 01:12 PM
    Well that's good to hear. Gonna hit him up with an email sometimes. I am waiting for the ACF bottom mount to be done as well, looks promising. But I would rather not be the beta tester for a new kit.
    12 replies | 107 view(s)
  • Terry@BMS's Avatar
    Today, 01:10 PM
    The Motiv kit is OK but has its limitations. I like the cleanliness of a bottom mount and the easy O2 sensor changes when needed, but the performance has been limiting. Waiting for an ACF bottom mount for our new build. :) For top mount ACF all the way. DocRace seems like a decent alternative though. On o2 sensors I like the ADVs in theory but I seem to get a lot of customer reports with problems. Payam here ran them and liked them though. Personally I currently prefer and run the NGK o2 sensors. On fueling I think your assessment of port injection (with the JB4 integration) is off base. But if you are not planning to run port injection I'd question whether its even worth doing a single turbo. You're probably better off running twins in the 600whp range. You'll have better spool, cleaner engine bay, fewer headaches, IMHO. It's not like the automatic trans is going to survive more than a few passes at 650whp anyway.
    12 replies | 107 view(s)
  • SPR12's Avatar
    Today, 01:07 PM
    I have a modded vt650 kit on my m3 with 600whp. Im running stock ZCP'S 9/10 with PSS 255/285 30's on full suspension. I had to trim the inner fender well for the 285's to fit but after no issues. I'm not going to run a sloppy 295 on a 10 combo and have it handle like shit. I've also run cups before and they are junk until hot on the street and hydroplane. What is the widest rim and tire I can fit in the space? Traction is a problem and I'm tired of burning out $400 tires in 8k! I'm thinking of going larger in the rim and tire if it can fit and NOT rub no matter what. Handling is key as I take the car through canyons every weekend and have a professional racing background. I was thinking of just getting a set of the new Conti Extreme sports as they're cheap to check them out but read mixed reviews and Tirerack scams you as they won't post numerical objective date to compare to PSS. Thanks!
    1 replies | 8 view(s)
  • ///MPOSTER's Avatar
    Today, 01:04 PM
    You decide....is it him ???
    1616 replies | 1454102 view(s)
  • ///MPOSTER's Avatar
    Today, 12:55 PM
    Security guard Jesus Campos is sharing a social security number with Jesus Quintero meaning he is an illegal alien and the reason he is not a registered security guard in NV. In the the meantime he has re-appeared on the tv show "Ellen" who seemed to be the highest bidder to make him come out.
    1616 replies | 1454102 view(s)
  • AdminTeam's Avatar
    Today, 12:42 PM
    Welcome sensai, take a look around, I think you will like what you see.
    0 replies | 1 view(s)
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