[theslik1]

Originally Posted by sdiver68

I hate to ask a dumb question here, but instead of mixing gallons of fuel, why not just add a bottle of octane boost?

From my "old school" turbo files:

For the truly adventurous there's "homemade" race gas.

30% Xylene mix (by volume) with 91 octane gas will get you in the 99 octane range. Toluene (widely used in octane boosters) is slightly lower octane but should get you to 98. Throw in a dab of Marvel Mystery Oil and ATF to keep the seals lubed and you're good to go.*

*until the seals melt.

[sflgator]

Just wanted to add this to the thread since the S. FL Xede installs are done...

I don't know about the 100 octane race gas stuff, but on my AT/Step just on 93 octane, OMG!!!

Stock dyno: 265 WHP / 286 lbs.-ft. TQ

Xede dyno: 322WHP / 378 lb.-ft. TQ, + 57WHP / +92 TQ

This thing pulls like I've only experienced in my bro's majorly modded '91 Dodge Stealth TT w/ over 500HP/TQ. I echo those TX guys who said they feel like they're driving completely new animals now. This is definitely an accurate statement. Let's just say that a stock 335i has amazing power (HP and TQ), but with the Xede, it's a real monster! It's got to be much faster than an M3 and ~ 99% of the cars out there. It just pulls and pulls with well over 420 lb.-ft. TQ (to the crank)! But, you also get the sense that the BMW engineers definitely made the car to handle this kind of power; now we know what this car is really capable of.

I have no idea about 0-60 or 1/4 mi. numbers, but based on stock numbers of 0-60mph and mid 13 sec. for 1/4 mi., I'd have to guess that it's now down to 4.0-4.5 sec. 0-60mph and ~ mid 12 sec. for 1/4 mi.

btw - Shiv was great; he answered all my questions and made me feel very comfortable with the whole process. There was a minor issue at first (after the Xede was all done and we were ready to dyno), but somehow Shiv fixed it, and it runs perfectly so far.

The one thing, however, is that for those ppl not that mechanically inclined, there are a lot of wires that need to be unhooked and put back and it can be a bit confusing even if you label them. Shiv's DIY Video should help with that (he said they're almost done with the video, and it will be posted on their Web site). For me personally, I'd say that taking apart the necessary pieces would be easy but putting it all back together with the Xede hooked up would require some good instructions or I'd just let a professional do it. However, once you know how to do it, it shouldn't take more than 20-30 min.

[DrDomer]

Originally Posted by sflgator

Stock dyno: 265 WHP / 286 lbs.-ft. TQ

Xede dyno: 322WHP / 378 lb.-ft. TQ, + 57WHP / +92 TQ

[oc24]

When are we getting the 91 oct Stage 0 results?

[BMW320i]

Originally Posted by sflgator

Stock dyno: 265 WHP / 286 lbs.-ft. TQ

Xede dyno: 322WHP / 378 lb.-ft. TQ, + 57WHP / +92 TQ

damn 322whp?? that's ~55+ whp!! and 450bhp!!!!!!

[dmeyer]

How did you get 450 bhp?

[sstarch1]

He pressed 3 numbers on the number pad, he could have easily come up with 489,577,324....

[ArmyBimmerDude]

I think he's basing the 450bhp off of a 25% loss due to the driveline.

[dmeyer]

Originally Posted by ArmyBimmerDude

I think he's basing the 450bhp off of a 25% loss due to the driveline.

Even if you figger 25% thats 429...

[sflgator]

Originally Posted by ArmyBimmerDude

I think he's basing the 450bhp off of a 25% loss due to the driveline.

First of all, it's definitely not a 25% drivetrane loss. Second of all, we asked Shiv about this, and he said it was more like a fix # loss, as opposed to a fixed % loss. However, he didn't know the exact number. I'm still assuming somewhere between a 10%-15% loss. That would put my numbers ~ 379BHP and 445TQ...whatever they really are, all I know is it's A LOT more than just stock!

[sflgator]

Originally Posted by Brisk

im just surprised the 0-60 and to 100 mph are not quicker. but the hp and tq are amazing.
-lumi

Who's timed 0-60mph and 0-100mph and/or 1/4 mi.???? I don't believe any Xede-equipped 335i's have been timed yet; we're all just "estimating." Either way, the car feels 10x faster (although the numbers might only show 0.5 sec. faster or whatever). I think when you're getting close to 4.0 sec. 0-60mph, "faster" is only relative.

[SheerCouture]

Originally Posted by Brisk

im just surprised the 0-60 and to 100 mph are not quicker. but the hp and tq are amazing.




-lumi

The times give on the posts are not actual results, so for some freak of a chance, 0-60 could be 3.9. Why not? If the stock AT 335i is doing 4.85, I'm sure from the gains we are seeing, 4.0 should'nt be too hard. Anyone want to clear things up and give it a run?

[aris214]

+1

[sflgator]

Originally Posted by SheerCouture

The times give on the posts are not actual results, so for some freak of a chance, 0-60 could be 3.9. Why not? If the stock AT 335i is doing 4.85, I'm sure from the gains we are seeing, 4.0 should'nt be too hard. Anyone want to clear things up and give it a run?

I suppose someone with a G-Tech timer would be acceptable; although not official, but believable. And, yes, the times on Shiv's Web site are still his best conservative guesses.

[sflgator]

Originally Posted by Brisk

cool i guess but with all that power im looking at a least 4.3 to 4.0 0-60mph time.... with tha tq and hp numbers..... but sometimes things are too good to be true
-lumi

FWIW, Shiv did a video on his car (with the Xede + his exhaust), running on 91 octane (which is like running on 93 octane and having just the Xede, stock exhaust) and the consensus (based on the video time) is that he did 0-60mph in 4.1 sec. But, again, this is not 100% accurate; just conjecture. This video is posted on YouTube I believe...just do a search on "335i" and/or "Vishnu."

[doctordel]

+1 to sflgator above.

The actual difference in times to these benchmarks we all love to speak of and have been quoting since we first picked up a Car and Driver are going to be so subjective as to be nearly meaningless to anyone but the driver of the car. With the perfect amount of wheelspin on the perfect surface with perfect environmental conditions, the best stock time to 60 was right at 4.9sec. That is fast, folks-->1990 Lamborghini Countach did 0-60 in 5.0sec and no one called it a slouch.

Just consider this: however fast you drove your 335 while stock, you will be driving it a great deal faster after the Xede. If you were neck-and-neck with that guy in the Firebird on the Turnpike last week, the next time you see him you will hand him his hat and offer your condolences. The Xede is fast...

[2007/335i/coupe]

+1 to sflgator and doctordel. Benchmark numbers are exactly that, only general figures that do not take other factors into consideration. I remember way back in 94/95 when the Integra GSR was released... most major publications published 1/4 miles in the 15.7-15.8 range. I was able to make a run stock at 15.3

So in the end, all that matters is that you are getting faster with performance upgrades.

[doctordel]

Originally Posted by 2007/335i/coupe

+1 to sflgator and doctordel. Benchmark numbers are exactly that, only general figures that do not take other factors into consideration. I remember way back in 94/95 when the Integra GSR was released... most major publications published 1/4 miles in the 15.7-15.8 range. I was able to make a run stock at 15.3

So in the end, all that matters is that you are getting faster with performance upgrades.

Sanity, at last...

[kaji335i]

Originally Posted by sflgator

FWIW, Shiv did a video on his car (with the Xede + his exhaust), running on 91 octane (which is like running on 93 octane and having just the Xede, stock exhaust) and the consensus (based on the video time) is that he did 0-60mph in 4.1 sec. But, again, this is not 100% accurate; just conjecture. This video is posted on YouTube I believe...just do a search on "335i" and/or "Vishnu."

4.1 is very realistic. My friend has a stage 0 335i auto and is putting down consistant 4.2-4.4 on 91 octane (videos to come when he gets back from vacation). Considering he isnt the best of drivers, with an experienced driver and a manual stage 1 car, 4.1 is probably right on target.

[sflgator]

Originally Posted by Brisk

stage 1 i would imagine a 4.1 run, but i cant imagine just a xede doing that.. maybe even a stage 1 with cold air, if that helps any.
-lumi

Don't forget that Shiv's Xede numbers and Shiv's run (on the video) that ppl conclude ~ 4.1 sec. are his Stage 1 car running on 91 octane gas (CA Prem. gas), while those of us fortunate enough to run our 335i's on 93 octane gas have seen very similar numbers with the Xede-alone (Stage 0). Even Shiv himself was surprised when he saw similar numbers (~ +50-60HP / +80-90TQ) with the Stage 0 (Xede-only) 335i's. He attributed this to the extra 2 octane in the 93 octane gas; I guess FI engines LOVE higher octane gas!

[BMW320i]

Originally Posted by sflgator

First of all, it's definitely not a 25% drivetrane loss. Second of all, we asked Shiv about this, and he said it was more like a fix # loss, as opposed to a fixed % loss. However, he didn't know the exact number. I'm still assuming somewhere between a 10%-15% loss. That would put my numbers ~ 379BHP and 445TQ...whatever they really are, all I know is it's A LOT more than just stock!

thanks for clearing that out.... i remember reading somewhere that it's 30% loss, but dont remember where exactly....

nevertheless, 75 extra bhp isnt bad at all!!

[BMW320i]

Originally Posted by sstarch1

He pressed 3 numbers on the number pad, he could have easily come up with 489,577,324....

or 527 (that's the closest # i can see) (ur posts)