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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > JB3 at Laguna Seca



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      07-20-2009, 05:28 PM   #45
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Super sick!! looks like a good scene.
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      07-20-2009, 05:39 PM   #46
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Thanks for sharing that. I'm super jealous.
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      07-20-2009, 07:20 PM   #47
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Thanks for posting Running the 1/4 mile is no near as demanding as e.g. Laguna Seca or similar tracks, you've been very brave and also did well.

Next week I'll visit the Nurburgring and zee germans with the JB+ powered 335. I'll post pictures and videos in a new thread.

http://www.roadracers.co.uk/nordschleife.htm
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      07-20-2009, 09:26 PM   #48
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No way! You were at Laguna on Friday? I was there on thursday and friday driving the 997 GT3 and the new 370Z. I saw your car but I was thinking... no way could that be Craig... and I had meant to come by and say hello on Friday but I never got a chance to.
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      07-20-2009, 11:02 PM   #49
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No way! You were at Laguna on Friday? I was there on thursday and friday driving the 997 GT3 and the new 370Z. I saw your car but I was thinking... no way could that be Craig... and I had meant to come by and say hello on Friday but I never got a chance to.
That sucks man! it would have been cool to see you.
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      07-21-2009, 12:01 AM   #50
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I don't know if I agree with this. I agree that tunes don't help on an autoX, but I felt that the tune helped at Laguna Seca.
I passed a lot of Porsches, Audi S4s, Audi TT, and a C5 Z06.
The tune on the straight away is awesome!
Yep, I don't think you can have too much power at Laguna. All that power is super handy on the long run from turn 11 down to turn 2.

Also, the uphill from 5 to 6 is brutal if you're in an underpowered car. Most of my track time has been in my Civic and NSX and both cars are way underpowered at Laguna compared to my E90 with JB3.
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      07-21-2009, 09:09 AM   #51
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As a guy who sucks on the track too, one thing I can tell you is that these piggys etc. are no favor on the track to us. Its way to much power. Brakes, suspension etc. all good for beginners (and a good instructor sitting there) but extra HP is not your friend until you are really good.
I agree, even putting on the race tires prematurely can hurt you. You will learn much more in a car like a Miata or an Elise on road tires then you will in say a ZR1.

Momentum cars will make you work on corner entry, exit and taking the proper line to keep your speed up. Road tires with less mechanical grip will allow you to feel what the car does at the limit, at a lower limit. A novice on race tires will often not be able to recover a slide because once you exceed to huge grip of the tires you are going really fast or you did something really wrong.

I have seen, and been frustrated by, guys with powerful cars on the track, they often treat a road course like a series of drag races exit corner -- WOT -- brake way to hard, go through the corner much slower then necessary -- Exit Corner -- WOT etc.

I don't know what 5's level of experience is so I will not comment on his choice of running a piggy, but if anyone who is thinking about hitting a road course is reading this I would encourage you to have your first day with no piggy and no "R" compounds.
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      07-21-2009, 09:35 AM   #52
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      07-21-2009, 09:40 AM   #53
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wih they had some near me! ugh
huh?
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      07-21-2009, 11:56 AM   #54
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Yep, I don't think you can have too much power at Laguna. All that power is super handy on the long run from turn 11 down to turn 2.

Also, the uphill from 5 to 6 is brutal if you're in an underpowered car. Most of my track time has been in my Civic and NSX and both cars are way underpowered at Laguna compared to my E90 with JB3.
Agreed - 5 through 7 really. I was there Saturday/Sunday and found myself unexpectedly tracking the 335i thanks to a fuel pump failure in the E46. I ran map 7 on ~96 and was identical in pull to a stock 996 GT3 but less then a C6 Z06. Temps held around 290 with heater on full blast. Oh, and the diff helps a lot to get the power down - I can't image trying to deal with ~390whp with an open diff.

Edit: Anyone traveling from SoCal to NorCal Saturday? I need a ride to retrieve my poor M from BMW of Monterey
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      07-21-2009, 12:06 PM   #55
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Originally Posted by Hit_Apex View Post
Agreed - 5 through 7 really. I was there Saturday/Sunday and found myself unexpectedly tracking the 335i thanks to a fuel pump failure in the E46. I ran map 7 on ~96 and was identical in pull to a stock 996 GT3 but less then a C6 Z06. Temps held around 290 with heater on full blast. Oh, and the diff helps a lot to get the power down - I can't image trying to deal with ~390whp with an open diff.

Edit: Anyone traveling from SoCal to NorCal Saturday? I need a ride to retrieve my poor M from BMW of Monterey
Sucks about the M!
I wish I had the LSD, but there's always next time.
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      07-21-2009, 12:17 PM   #56
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Rock on!
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      07-21-2009, 02:31 PM   #57
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sorry for OT but, is it better to have High humidty or low humidty for our engines to run at Best power? or right in the middle 50%? i going to the track this sunday. again sorry for OT.
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      07-21-2009, 03:05 PM   #58
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That sucks man! it would have been cool to see you.
Ya man, now I'm bummed. Oh well, next time!
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      07-22-2009, 11:37 AM   #59
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I wouldn't have titled that section 'what not to do.' Your form on the recovery attempt was excellent, the rears just broke loose.

Your form is very consistent, which is admirable. I also think you may be getting onto the early part of the curves too sharp and too hot. There is a real temptation when entering a corner fast, to make the tires make noise, so you feel that you know where your limit is early in the turn. If you can delay that max lateral G until the apex though, you might be able to get through these turns a little quicker and without leaving quite so much rubber.

It's a scarier feeling though, you never know quite where you are. And as your video shows when you do cut loose, it all happens very quick!
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      07-22-2009, 11:47 AM   #60
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I wouldn't have titled that section 'what not to do.' Your form on the recovery attempt was excellent, the rears just broke loose.

Your form is very consistent, which is admirable. I also think you may be getting onto the early part of the curves too sharp and too hot. There is a real temptation when entering a corner fast, to make the tires make noise, so you feel that you know where your limit is early in the turn. If you can delay that max lateral G until the apex though, you might be able to get through these turns a little quicker and without leaving quite so much rubber.

It's a scarier feeling though, you never know quite where you are. And as your video shows when you do cut loose, it all happens very quick!
Thanks man. I did my best to pull out of it, but I hit the "oh shit" point.
Here are some pictures of the event.
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      07-22-2009, 02:44 PM   #61
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OK OK ... now i'm getting the trackbug itch again. Thanks Mr.5, I think my wife and kids are going to get abandoned now.

In my track-ready WRX I was doing 1:48s and my reflashed stock-ish Evo I was doing 1:42s. I would love to see what my 335 would do. Laguna is a high horsepower track, the whole back is uphill and the front straight is insanely long.

The question now is ... when is the next trackday folks are looking at? I'm game for anything in CA or even Reno-Farley.

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      07-22-2009, 09:05 PM   #62
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OK OK ... now i'm getting the trackbug itch again. Thanks Mr.5, I think my wife and kids are going to get abandoned now.

In my track-ready WRX I was doing 1:48s and my reflashed stock-ish Evo I was doing 1:42s. I would love to see what my 335 would do. Laguna is a high horsepower track, the whole back is uphill and the front straight is insanely long.

The question now is ... when is the next trackday folks are looking at? I'm game for anything in CA or even Reno-Farley.

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Speedventures is going back in August.
http://www.speedventures.com/events/...il.aspx?id=231
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      07-23-2009, 01:01 AM   #63
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Speedventures is going back in August.
http://www.speedventures.com/events/...il.aspx?id=231
Sorry, but that's crazy expensive for any track event
NCRC will be there in Dec for $170, and that's a good group to run with.

As for no tune or R-comps, yes you can learn allot. I was running mid 1:55 towards the end of Saturday with NT-05's, RPI FMIC, and upgraded oil cooler with no tune. I think my goal would be low 1:5X's without a tune at best.

I'll tell you this much, I was hanging with a couple M3's in the turns but ended up getting walked away from in every straight. I'd like to be tuned next time to see how it goes.

Here's a 1:56 of mine from sat

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      07-23-2009, 09:30 AM   #64
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I agree with you.
But, what I don't agree with is that "a tune will not help at Laguna Seca."

The best thing that I learned was from leftcoastman, and that was "learn on street tires." I was seriously thinking of getting the NT-01s for my track tires, but leftcoastman was very adimant against the purchase because R comps mask mistakes.
I'm sure if I had the LSD, things would have been a little easier to control as well, but all in all, I'm happy for my overall 3rd track day.

I'm sure your times will increase a good amount with a tune. Especially since you have the BBK and the LSD to go with it.

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Sorry, but that's crazy expensive for any track event
NCRC will be there in Dec for $170, and that's a good group to run with.

As for no tune or R-comps, yes you can learn allot. I was running mid 1:55 towards the end of Saturday with NT-05's, RPI FMIC, and upgraded oil cooler with no tune. I think my goal would be low 1:5X's without a tune at best.

I'll tell you this much, I was hanging with a couple M3's in the turns but ended up getting walked away from in every straight. I'd like to be tuned next time to see how it goes.

Here's a 1:56 of mine from sat

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      07-23-2009, 10:12 AM   #65
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I agree with you.
But, what I don't agree with is that "a tune will not help at Laguna Seca."

The best thing that I learned was from leftcoastman, and that was "learn on street tires." I was seriously thinking of getting the NT-01s for my track tires, but leftcoastman was very adimant against the purchase because R comps mask mistakes.
I'm sure if I had the LSD, things would have been a little easier to control as well, but all in all, I'm happy for my overall 3rd track day.

I'm sure your times will increase a good amount with a tune. Especially since you have the BBK and the LSD to go with it.
I guess it comes down to what do you mean by "help" I find it best, and safest to check my ego at the paddock, there are no trophies but there are tow trucks and ambulances. If you are looking to brag about hanging with an M3 up the hill or whatever then a tune will "help" but it won't mean you are a better driver, and it won't help you become a better driver. It will give you more speed with which you can make bigger errors, and it will wear out your tires a brakes faster.

The last (and only) time I was at Laguna, I decided it would be a good idea to follow a track prepped Miata that was on sticky rubber. I was in a much faster car then he was, but I got to see the line he was using and improve my driving instead of just blowing him into the weeds on a straightaway.

Another thing that is fun about being in a less powerful car is setting up your corner so you can get a good drive out of the corner and get past a more powerful car on a straightaway just with good technique. Up at Thunderhill there was a guy in a Supercharged Mustang that I was stuck behind because he was a corner to corner drag racer and probably had 150hp more then me, but I was able to set up my corner carry lots of momentum through and pass him by the end of a long straightaway...which felt good.
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      07-23-2009, 10:40 AM   #66
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The last (and only) time I was at Laguna, I decided it would be a good idea to follow a track prepped Miata that was on sticky rubber. I was in a much faster car then he was, but I got to see the line he was using and improve my driving instead of just blowing him into the weeds on a straightaway.
Very good advice!!! That's exactly what I do whenever I go to an unfamiliar track.
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