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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 > Vishnu/FFTEC Single Turbo 335i on Inside Line!



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      04-25-2012, 04:19 PM   #45
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Quote:
Originally Posted by jpsimon View Post
to me, the results that speak loudest are still his 60-130 time. that is the test magazines should be conducting.
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      04-25-2012, 04:20 PM   #46
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Quote:
Originally Posted by jpsimon View Post
to me, the results that speak loudest are still his 60-130 time. that is the test magazines should be conducting.
Agreed ... this would be a more repeatable test and the numbers can be compared more closely with one another.
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      04-25-2012, 04:21 PM   #47
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Quote:
Originally Posted by jpsimon View Post
to me, the results that speak loudest are still his 60-130 time. that is the test magazines should be conducting.
I cannot see that happening as it shouldn't be of any reader's interest, since it is illegal to drive at those speeds....
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      04-25-2012, 04:29 PM   #48
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Quote:
Originally Posted by jippii ensio View Post
I cannot see that happening as it shouldn't be of any reader's interest, since it is illegal to drive at those speeds....
uh... you're reaching illegal speeds at the end of a 1/4 run even with a slow car. With your logic those tests shouldn't be of reader's interest either.

There are places you can do both, the 60-130 testing reduces the variables considerably for better comparisons and really helps show a cars true performance without factors such as poor track prep/traction issues/driver skill etc.

Last edited by jpsimon; 04-25-2012 at 04:35 PM..
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      04-25-2012, 04:30 PM   #49
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Quote:
Originally Posted by pits200 View Post
It's about traction, 1st and 2nd are severely limited with rwd. With awd and full use in 2nd will be a game changer, at least in my eyes.

What do high trap speeds say with average 1/4 times, says not much traction in lower gears.
Explain that to all the fast auto RWD cars out there then Autos are easier to launch and launch more consistently. High trap speeds MIGHT say poor traction in lower gears, that's not the whole story though. I'd say high trap speeds vs ET have more to say regarding the 60' time, not just straight traction with lower gears (as you imply with 2nd which hits close to 70mph at redline - not exactly 'low')
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      04-25-2012, 04:31 PM   #50
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This is also not a car that would be built for 0-60 crazy runs. It is more 60-130 based.
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      04-25-2012, 04:33 PM   #51
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Quote:
Originally Posted by jippii ensio View Post
I cannot see that happening as it shouldn't be of any reader's interest, since it is illegal to drive at those speeds....
hmm... It's illegal to do 1/4 mile pulls too when you're trapping at 125 to 130. In fact every car I've ever owned traps at illegal speeds in the 1/4 mile.

There's not too many tests that would be considered lawful if done on the streets including 0-60, 0-100, 1/8 mile, 1/4 mile, 60 & 70 to 0 braking, top speed, 300 foot skid pad, slalom etc.

I'm not 100% sure what your point is here...
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      04-25-2012, 04:34 PM   #52
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Hell, winding out 2nd gear in the 335i is illegal on regular roadways. Legal/illegal is irrelevant to the discussion here.
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      04-25-2012, 04:49 PM   #53
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Quote:
Originally Posted by jippii ensio View Post
I cannot see that happening as it shouldn't be of any reader's interest, since it is illegal to drive at those speeds....
I think a Prius may hit "illegal" speeds at the end of the 1/4 mile run too ... maybe.
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      04-25-2012, 04:49 PM   #54
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On the 11.10 run, was that Lost Marines car?
If so, Thats an auto, so not exactly fair comparison to Shivs car..
Also i dont know its its just the video quality, but his car sounded like sh*t
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      04-25-2012, 05:00 PM   #55
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I really didn't expect that 1/4 mile time to be that low but with the conditions explained...I can see why. You need to take it to a real track, that thing has to be faster!
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      04-25-2012, 05:06 PM   #56
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Quote:
Originally Posted by jpsimon View Post
uh... you're reaching illegal speeds at the end of a 1/4 run even with a slow car. With your logic those tests shouldn't be of reader's interest either.

There are places you can do both, the 60-130 testing reduces the variables considerably for better comparisons and really helps show a cars true performance without factors such as poor track prep/traction issues/driver skill etc.
Many of us have been running a quarter mile legally and got verified results. Of course many of us are interested in 60-130, but I still don't see magazines to test it. Do you? And what is your reasoning for them testing quarter mile rather than 60-130?
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      04-25-2012, 05:14 PM   #57
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Quote:
Originally Posted by jippii ensio View Post
Many of us have been running a quarter mile legally and got verified results. Of course many of us are interested in 60-130, but I still don't see magazines to test it. Do you? And what is your reasoning for them testing quarter mile rather than 60-130?
You can run 60-130 legally as well. Good 60-130 times are far more impressive/telling to me than 1/4 mile times which are tainted by many variables.

Last edited by jpsimon; 04-25-2012 at 05:23 PM..
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      04-25-2012, 05:20 PM   #58
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Quote:
Originally Posted by jpsimon View Post
You can run 60-130 legally as well. Good 60-130 times are far more impressive/telling to me than 1/4 mile times.
+1 60-130 is a true measure of a cars power, there are just too many variables in launching a car with 1/4 runs. As for leagality, that's what they make private runway events and closed courses for

The magazines and online articles I read test 60-130 numbers. You won't find those times in biased main-stream car magazines (even though they all have hard-ons for the 3 series).
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      04-25-2012, 05:55 PM   #59
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I think these results are great, and even greater given the results and conditions the car was subjected to. Congrats again Shiv. Great to have options, and happy to see the results of single turbo application in it's infancy stage and obviously has a lot more in it. Reminds of when HPF first released their kit for the E46 M3, very similar results:

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      04-25-2012, 06:20 PM   #60
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thats video was funny i would definitely choose a big single over upgrade twins regardless of who makes it be shiv helix or hpf im srry but dragging is not the type of power i use ever day im usually going 55-60 conserving fuel in the right lane when then i see an opening that allows me to rip it i need a turbo that wakes up at 3k could care less for responsivness at 2k 1k 1.5k i mean come on who even starts a drag from that rpm.. also shiv i feel like the driver was scared to really run the car because modulating the throttle a bit would've really helped those launches out. i feel like he was either on or off with the pedal


damn you mods lmaoooo ninja editing the crap out of that
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      04-25-2012, 06:25 PM   #61
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Very close times to what a stock Zr1 put down in their testing... While impressive... this is a 630 WHP car we are talking about on race gas /meth and DRs, that suspension needs massive amounts of work.
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      04-25-2012, 07:32 PM   #62
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Quote:
Originally Posted by Q4P View Post
Very close times to what a stock Zr1 put down in their testing... While impressive... this is a 630 WHP car we are talking about on race gas /meth and DRs, that suspension needs massive amounts of work.
It does need help launching. The stock suspension has too much compliance and results in axle hop all through 1st gear. And 2nd gear lights up unless you baby shift the 1-2 as shown in the Edmund's testing video. What's made it worse is that I think was that the rear of the car was too high (m3 rear springs with stock replacement shocks) which resulted in too much squat/camber change which reduced contact patch. A couple weeks ago, we took the car to the Sac raceway to see how it would perform with a prepped surface and, as expected, the axle hope was much more violent and the first few 60' times were in the 2.0-2.2s range. After a few runs, I managed to get it down to 1.9s which was good for a 11.3@129. While i believe it's the new 6mt world record, it's hardly a good pass. And looking at the wear on the drag radials, it's wearing the ouside shoulders which supports the idea of the squat/camber change screwing everything up.

With the stock turbos, the car used to cut 1.6-1.7s 60's without much effort. But way the single turbo power hits combined with the much more used and abused suspension components, makes the launch much more challenging.

This is the reason we spent the last two weeks getting the new suspension installed and tested. Everything from alignment to ride height to shocks/springs have been changed with the hopes of being able to transfer and maintain weight over the rear tires under acceleration. Nothing that we are doing is "massive". But we are carefully setting up the suspension with hopes of achieving the 1.7s 60' time we need to run 10s at this current boost level.

The funny thing is that the 6AT single turbo car will probably have to jump through none of these hoops to cut a good ET/60'.

Shiv

Last edited by OpenFlash; 04-25-2012 at 08:11 PM..
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      04-25-2012, 10:54 PM   #63
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Quote:
Originally Posted by shiv@vishnu View Post
It does need help launching. The stock suspension has too much compliance and results in axle hop all through 1st gear. And 2nd gear lights up unless you baby shift the 1-2 as shown in the Edmund's testing video. What's made it worse is that I think was that the rear of the car was too high (m3 rear springs with stock replacement shocks) which resulted in too much squat/camber change which reduced contact patch. A couple weeks ago, we took the car to the Sac raceway to see how it would perform with a prepped surface and, as expected, the axle hope was much more violent and the first few 60' times were in the 2.0-2.2s range. After a few runs, I managed to get it down to 1.9s which was good for a 11.3@129. While i believe it's the new 6mt world record, it's hardly a good pass. And looking at the wear on the drag radials, it's wearing the ouside shoulders which supports the idea of the squat/camber change screwing everything up.

With the stock turbos, the car used to cut 1.6-1.7s 60's without much effort. But way the single turbo power hits combined with the much more used and abused suspension components, makes the launch much more challenging.

This is the reason we spent the last two weeks getting the new suspension installed and tested. Everything from alignment to ride height to shocks/springs have been changed with the hopes of being able to transfer and maintain weight over the rear tires under acceleration. Nothing that we are doing is "massive". But we are carefully setting up the suspension with hopes of achieving the 1.7s 60' time we need to run 10s at this current boost level.

The funny thing is that the 6AT single turbo car will probably have to jump through none of these hoops to cut a good ET/60'.

Shiv
2nd gear launches + 6AT = idiot proof, even on street tires!

I've owned a 6MT N54 as well before, and even with MT ET streets, it was no easy task to launch this thing reliably. I think the 6AT single turbo will do some serious damage with the smaller compressor. Have you figured out how to make the auto transmission upshift at 7200 like the manual?
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      04-25-2012, 11:05 PM   #64
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People saying I thought it would be faster... I had a 450whp evo x n ran 11.6 at 121. This car is fast!!
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      04-25-2012, 11:19 PM   #65
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Quote:
Originally Posted by jpsimon View Post
uh... you're reaching illegal speeds at the end of a 1/4 run even with a slow car. With your logic those tests shouldn't be of reader's interest either.

There are places you can do both, the 60-130 testing reduces the variables considerably for better comparisons and really helps show a cars true performance without factors such as poor track prep/traction issues/driver skill etc.
Well, 60-130 can be manipulated by slope though. If comparison 60-130 results are done on a 0 slope, sure I would agree with you, but how often do we see that?
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      04-25-2012, 11:21 PM   #66
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certainly is a haterade circle jerk in the comments.
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