[pikkashoe]

Good run e90335. I just got back from a night of partying in coral gables an my therm read 60, so you had some great temps tonight. Congrats once again. You beat my time of 12.84 with manual and rfts. Lets get together for the next outing.

[imaznumkay]

damn hombre...
just got back from partyin in boca, forgot about the track shit man, sorry lol
anyways, VERY nice slips u got today

[E90 335i]

What I find interesting is how I got my best trap speed with one of my average 60's. I was doing run after run and the last run, I let the car cool down just a little bit and I let her rip.

I'm pretty sure I found the KDW's to fit our stock 162's. I searched our specs through Tire Rack and they said they had the KDW's in that spec and it was like $185/piece.

[Cookiemonster]

Originally Posted by pikkashoe

Good run e90335. I just got back from a night of partying in coral gables an my therm read 60, so you had some great temps tonight. Congrats once again. You beat my time of 12.84 with manual and rfts. Lets get together for the next outing.

What was your 60' times?

My best 60' has been 2.06 on RFT's. But most are in the 2.1X range. I usually avoid the water box and don't even do a burn out. Never thought it helped the RFT...maybe after seeing this post I will do a burn out.

Also 1 push of the traction button or two pushes of the traction button. I use to do two pushes but lately I think on the street i am getting better launches with just one push??????????

Nice 60' time E90 335I. A good 60' leads to a good 1/4 mile.

Getting a good time at the track is really a "HIGH" feeling!

[E90 335i]

M1 and hold the DTC button for 5 seconds. Go through the water and stop your back tires in the pit. Do a nice burnout and continue forward. Hit the DTC button once to turn all controls back on and hit it once again where the DTC light shows up only once. Throw the car in DS and roll to the stage lights and do your thing. Remember, I was able to launch at 2100 RPM and I did not hear any wheel spin. Burning out DOES help your RFT! Mine got really sticky by the end of the night and doing a burnout in the water helps clean the sand/dirt/debris off your tires that you pick up on the way back to the starting line. I highly recommend a burnout, but I trashed my tires pretty nicely.

I'm wondering if that wheel insurance package covers wear on tires?

[Boostin335]

what % of tread are left on the run flats? If its lower, maybe thats why the 60's got better?

[musc]

Originally Posted by E90 335i

What I find interesting is how I got my best trap speed with one of my average 60's. I was doing run after run and the last run, I let the car cool down just a little bit and I let her rip.

I'm pretty sure I found the KDW's to fit our stock 162's. I searched our specs through Tire Rack and they said they had the KDW's in that spec and it was like $185/piece.

Your trap speed will be slightly quicker when you don't hook as well, particularly if you compare street tires vs DRs. My traps have always been 1-2mph slower on drag slicks vs street tire. Also your staging position can change the mph too. I always try to stage as shallow as possible for the maximum rollout.

[CASHBY]

another 12 sec 335 to the club!

congrats!

[wahoo]

Enough with the bench racing and 1/4 miles (Sfl & Terry). You all need to get to a ROAD (road Atlanta) track or go to tail of the dragon.

A great trip would be a track day at Road Atlanta and then up to tail of the dragon.

To the OP, congratulations - sounds like you've got it nailed. Come north and drive the north Georgia mountains. Nowadays, I'm more interested in getting to work <45minutes...ta hell wit 1/4miles.

[Driver72]

Originally Posted by E90 335i

First of all, I'm running JB2H, 93 octane, cat-back exhaust, and VIP Tuning CAI. I am running stock RFT with not-so great tread.

Nice, 12.8 @ 110 sounds about right for a JB2H on 93 Octane with catback and CAI. You could maybe even do a bit better with that set up too.

Which catback exhaust do you have?

And did you dyno your car before and after putting on the catback and then the VIP Tuning CAI??

I know most catbacks are good for 12-14 rwhp and that CAI is probably good for 8-10 rwhp on a dyno and 12-14 rwhp on the road when driving 80-100 mph.

If you haven't hit up a dynojet and see what you're putting down.

The runflats are actually pretty good for traction BTW.
They just suck in every other aspect.

And without DR's lightweight wheels (especially really light ones) actually make things worse for launching as you'll spin much easier and therefore can't launch as hard.

[e90AW335i]

Nice times.....Congrats

[E90 335i]

Driver72,

I am running a custom setup that Mr. 5 came up with. I had my local shop fab up 2.5'' aluminized piping, no secondary cats, and no resonators...has Magnaflow mufflers and 3.5'' Magnaflow tips.

Honestly, I think I am lucky if I get 8 whp out of this setup. I just don't think it did that much for me. It was good for at most 1 CL over a stock E90.

I am considering trying some new mufflers as I know the 2.5'' piping is about as good as it gets. I think the mufflers are just a bit too conservative for power. See if I can get my hands on the Eisenmann muffler and keep the same tips.

As far as the runflats are concerned:

I've seen 99% of the people on here post that they suck for traction. I think they handle great around corners and they are tricky to hook up sometimes. I was always encouraged to get new tires, but I don't understand why I can get such good 60' (1.86) on stock RFT with factory specc'd tire pressures?

If I let the car cool down enough, with a good launch, there was probably slightly more in the trap and slightly less in the E/T. 12.7's were there last night, I just did over 12 runs by 10:30 PM and I was tired, as were all of my friends, because they kept watching the same 30 cars run over and over and over again....including a group meet of old VW Bugs that were running 20's and VW hippie busses that were running 15's-25's.

[Driver72]

Originally Posted by E90 335i

Driver72,

I am running a custom setup that Mr. 5 came up with. I had my local shop fab up 2.5'' aluminized piping, no secondary cats, and no resonators...has Magnaflow mufflers and 3.5'' Magnaflow tips.

Honestly, I think I am lucky if I get 8 whp out of this setup. I just don't think it did that much for me. It was good for at most 1 CL over a stock E90.

I am considering trying some new mufflers as I know the 2.5'' piping is about as good as it gets. I think the mufflers are just a bit too conservative for power. See if I can get my hands on the Eisenmann muffler and keep the same tips.

1 CL over a stock 335i is therefore about 10-12 rwhp.
That's about right for a catback exhaust, maybe a bit on the low side.
Just removing the 2nd cats is worth 3-4 rwhp.
So if your custom exhaust has removed the 2nd cats, the resonators, and is straighter and removed the bends of the stock set up, yeah you could figure 10-12 rwhp gained....and probably 30+ lbs lost in weight too.

Changing just the mufflers don't do much to be honest.
Unless you don't like the sound of your Magnaflows, if they are a high flow muffler already, you won't gain anything by going to a different muffler, just get a different sound.

[e90AW335i]

Originally Posted by Driver72

Changing just the mufflers don't do much to be honest.
Unless you don't like the sound of your Magnaflows, if they are a high flow muffler already, you won't gain anything by going to a different muffler, just get a different sound.

Magnaflows are a strait flowthrough muffler, so it is as high as it gets I believe...

[E90 335i]

My Magnaflow exhaust sounds great - just like the stock note, but louder, throatier, and more pronounced. It doesn't sound like Sherwin's (Walked U) exhaust. Sherwin's is just really loud and mine is quiet compared to his. I would think that the more sound = more flow and thus my Magnaflows aren't as free-flow as maybe the Eisenmann is? I can't see how people would spend almost a thousand bucks on just midpipes from any aftermarket company when they can just have their shop custom fab it for them (if the shop will and if the shop does a good job). Fortunately, I am friends with the owner of my exhaust shop and the piping guy did a great job on the custom job. Can't beat it for 550.

I also have a Magnaflow X-pipe.

In the races I ran vs. the stock 335, it was .5-1 CL distance tops when we ran.

Either way, I am going to put on exhaust cutouts right after catless DP (either UR or the factory DP gutted) with a wastegate that opens at 6 PSI so changing my mufflers won't do anything for me because when I hear my exhaust, it will be out of the cutouts because I'll be in boost and the cutouts will be open.

[radgator1]

Excellent times, congrats

Looks like the JB2H is making some strong showings.

Dinan power at Walmart pricing=Market advantage

[Driver72]

Originally Posted by E90 335i

I am going to put on exhaust cutouts right after catless DP (either UR or the factory DP gutted) with a wastegate that opens at 6 PSI so changing my mufflers won't do anything for me because when I hear my exhaust, it will be out of the cutouts because I'll be in boost and the cutouts will be open.

I hope you want a really loud car?
Cut-outs make the car quite loud. I rode in Terry's when he had the cut-outs and they are a bit obnoxious. And I think he said they only gained him like 3-4 rwhp. Hardly worth it unless you want that really loud sound.

CAI, DP's and cut-outs will be REALLY loud.

[E90 335i]

Well, here's the cool thing.

Terry's cutous were placed further back than where mine are going to go. I believe his went right before the mufflers, only bypassing those. Mine will bypass everything including the midpipe and X pipe...it will go right after the catless DP.

The cool thing I was talking about was that the cutouts only open up at 6 PSI. If you are going easy on the car, or you are idling, the car sounds like it would with my exhaust as it is. When you are on it and on boost at or over 6 PSI, the cutouts open up via the external wastegate and exhaust is dumped right after the DP when you are on it. The wastegates can be defaulted in the open position for track days or dyno days. So, you don't necessarily have a loud and obnoxious car 100% of the time, only when you want it to be and only when you want the most HP...when you're driving on boost and laying on the gas.

VIP Tuning has the same setup and yes, it is very loud, but it sounds normal when it is idling or he is driving 'normally' and not like a maniac on boost.

Terry's cutouts were either default open or default closed.

[BoLaS]

Originally Posted by E90 335i

Well, here's the cool thing.

Terry's cutous were placed further back than where mine are going to go. I believe his went right before the mufflers, only bypassing those. Mine will bypass everything including the midpipe and X pipe...it will go right after the catless DP.

The cool thing I was talking about was that the cutouts only open up at 6 PSI. If you are going easy on the car, or you are idling, the car sounds like it would with my exhaust as it is. When you are on it and on boost at or over 6 PSI, the cutouts open up via the external wastegate and exhaust is dumped right after the DP when you are on it. The wastegates can be defaulted in the open position for track days or dyno days. So, you don't necessarily have a loud and obnoxious car 100% of the time, only when you want it to be and only when you want the most HP...when you're driving on boost and laying on the gas.

VIP Tuning has the same setup and yes, it is very loud, but it sounds normal when it is idling or he is driving 'normally' and not like a maniac on boost.

Terry's cutouts were either default open or default closed.

Is there any way to make the cutouts open up and a higher psi? Maybe like 12 and up... I tend to have a heavy foot and a cut out that opens at 6psi would make my car sound loud as balls all day long

[E90 335i]

Originally Posted by BoLaS

Is there any way to make the cutouts open up and a higher psi? Maybe like 12 and up... I tend to have a heavy foot and a cut out that opens at 6psi would make my car sound loud as balls all day long

That's a good question. I drive the same way as you do....most of the time on boost. But, when I have women/children/elders in the car, I never drive on boost and I never want it to be loud. When I drive on boost, I love the sound.

So this is perfect for me.

Loud when I want it to be (boost) and quiet when not on boost....love it. Can't wait to get it done.

This isn't a setup for everyone. It is an absolute MAX performance solution for exhaust and I understand this isn't everybody's taste. But if you do want max power, this is the way to go...at least for me.

I'll have to find out if there is an adjustment you can make to the wastegate to allow more resistance before opening.

[sambonator]

What kind of cutouts are they, that open and close automatically? Where do you buy them?

[E90 335i]

They're a custom job right now from a shop down here. It requires some welding, but as far as I know, there is no 'bolt-on' option for this for our cars - it has to be welded on. It should go to production for our cars in a few months tops - of course, the product description will have the note that welding is required. I'm pretty sure only one 335 has this setup and that's the tuning shop's car that developed this product.