[-null]

Edit: I actually have access to E85, just found out.

Hi all. Just got my 2011 335i M Sport auto a few days ago. I've got a 3rd party warranty with it that is pretty comprehensive so I'd like to keep my mods undetectable and easily reversible. I'd like to keep the intake / cat back exhaust / intercooler OEM. I'm also limited to 91 octane pump.

I've already put in the order for the JB4 and it's on its way now. I've also thrown on some staggered 8.5 and 9.5 inch wide wheels to help put the power down.

I'm thinking about adding a drop-in filter and getting the stage 1 turbo from Pure or VTT. Possibly adding a HFC since I'm not going to risk running a straight downpipe here in California. Of course I'll be upgrading the charge pipe as well.

Any idea what kind of numbers I should see with this set up? I don't think the intake or exhaust would be a bottleneck at the power levels I'm looking for and I won't be tracking it so heat soak in the intercooler is a non-issue.

[Johnny Boost]

Honestly I think you'll be disappointed after you spend all that money on a JB4 and upgraded turbo. You're really limiting yourself because you're not willing to run the essential mods. My advice would be to add a catless downpipe, e85 (or meth), and intercooler to your list. I'm not sure what you meant by "risk" when it comes to a downpipe. A high flow catted downpipe will throw a check engine light and wont pass emissions. So you are essentially paying double (sometimes triple) the price for less power and the same amount of headaches. An intake isn't a make or break performance part but if you're FBO with an upgraded turbo, you will get a decent bump in power over stock/drop-in filters. A Jb4 and chargepipe are not "undetectable" to any decent BMW technician. You may want to do a bit more research before spending anymore money on performance because if you are paranoid about warranty concerns then it may not be worth modding at all.

[-null]

Originally Posted by Johnny Boost

I'm not sure what you meant by "risk" when it comes to a downpipe.

If you get caught in Cali without a cat there are huge several thousand dollar fines. There are several people who've had fines from 1.5K up over 5k. It's not worth risking for an extra 15hp I'd get from a downpipe over a HFC.

On the fuel, I don't have access to E85 or Meth without having to get it shipped to my house and that's more hastle than it's worth.

Originally Posted by Johnny Boost

A Jb4 and chargepipe are not "undetectable" to any decent BMW technician.

The JB4 would be removed if I had to take it in. I checked on the chargepipe and my indy shop doesn't car, they won't mention it if I have issues.

Originally Posted by Johnny Boost

You may want to do a bit more research before spending anymore money on performance because if you are paranoid about warranty concerns then it may not be worth modding at all.

Agreed, that's why I'm here trying to get up to speed. I'm not paranoid about warranty, I'm not going to be racing people or tracking the car, I'd just like to get the easy power gains that keep the car appearing stock to the naked eye and that don't make it a hassle to live with daily driving.

[weehe126]

Im not sure what your power goals are, but with 91oct, a jb4 and stage1 turbo you might get to 330whp. I'm not even sure you will see a benefit from the stage 1 turbo since you will only be running 91. Stage 2 would be different, possibly could see closer to 400whp and the pure stage 2 looks stock.

[JETmn]

Yeah, octane is going to be your issue. I am running JB4, CP and Pure stage 1 as my only upgrades right now. Jb4 will be a decent increase for you and the stage 1 will allow you to pull to redline instead of shifting at 5500, but won't add much power without octane.

I had been running on 93 for a month or so and just went back to E40, what a difference! Car is much more fun again. I wish there was more E85 in Orlando. only 2 stations in the whole city. Luckily one is right on my way home now, but won't be in the near future when we buy a house probably.

[-null]

Ok, I just found out there is an E85 station about 20 minutes from my house, so I'm ecstatic. I hadn't checked around for E85 since I sold my last Evo a few years ago since I haven't had a turbo car.

Is there anything else I need to do to run E85? Or can I just throw on the JB4 and fill it up with E85?

What kind of power potential is there with the E85 in the mix with the criteria I mentioned before?

[weehe126]

You can probably only run a mix to get E50, you cant run straight E85. You will need the FF wire's with your JB4. Stage 1 and E50 as only mods with JB4 you might see 380whp.

[classyfast]

Originally Posted by Johnny Boost

Honestly I think you'll be disappointed after you spend all that money on a JB4 and upgraded turbo. You're really limiting yourself because you're not willing to run the essential mods. My advice would be to add a catless downpipe, e85 (or meth), and intercooler to your list. I'm not sure what you meant by "risk" when it comes to a downpipe. A high flow catted downpipe will throw a check engine light and wont pass emissions. So you are essentially paying double (sometimes triple) the price for less power and the same amount of headaches. An intake isn't a make or break performance part but if you're FBO with an upgraded turbo, you will get a decent bump in power over stock/drop-in filters. A Jb4 and chargepipe are not "undetectable" to any decent BMW technician. You may want to do a bit more research before spending anymore money on performance because if you are paranoid about warranty concerns then it may not be worth modding at all.

Dreams shattered^! Lol

[classyfast]

OP, I say grab all BMW performance stuff including the ppk, have dealer install it, and Stack Cobb w protune on it. K&N drop in, call it a day.

[weehe126]

Originally Posted by classyfast

OP, I say grab all BMW performance stuff including the ppk, have dealer install it, and Stack Cobb w protune on it. K&N drop in, call it a day.

You realize the ppk is a flash tune that the cobb would just write over. And the DME keeps a flash counter.

[classyfast]

Originally Posted by weehe126

You realize the ppk is a flash tune that the cobb would just write over. And the DME keeps a flash counter.

My mistake, stack jb4 with the ppk or run COBB solo.

Either way there has yet to be concrete evidence that there is a flash counter on e9x 335's, speculation mostly and nobody ever got flagged for that

[ONE_slow_m5]

got some High flow catted downpipes for sale for n55 that LOOK Identical to OEM they are wagner.

[-null]

Originally Posted by Blown_by_TWINS

got some High flow catted downpipes for sale for n55 that LOOK Identical to OEM they are wagner.

Do they throw a code? I'd like to avoid the CEL.

Edit: Bonus pic of the E90 with the new wheels

[ONE_slow_m5]

Originally Posted by -null

Do they throw a code? I'd like to avoid the CEL.

Edit: Bonus pic of the E90 with the new wheels

They DO not throw a code even when tune is removed. check out my part out thread in the for sale section.

[classyfast]

Originally Posted by -null

Do they throw a code? I'd like to avoid the CEL.

Edit: Bonus pic of the E90 with the new wheels

What wheels are those?

[classyfast]

Originally Posted by Blown_by_TWINS

got some High flow catted downpipes for sale for n55 that LOOK Identical to OEM they are wagner.

I have always heard the Wagner dp eventually throws codes.....what's your experience with it??


I looked into them for a while. Every tuner I spoke to said it's completely pointless to do a hi-flow cat on N55 bc it still bottle necks it.

What kind of tune were you running with the Wagner?

[Andrewe92]

I didn't read too much into the posts but, you can easily get a catted dp from wagner or something with some gains obj not as much as catless but probably won't cause too much of an issue with the dealer, or find a chill dealer. I always had mods on mine and it was never an issue

[-null]

Originally Posted by classyfast

What wheels are those?

They're 19 inch Luxe wheels 8.5 Front 35/19/235 - 9.5 Rear 30/19/265.

[classyfast]

Originally Posted by -null

They're 19 inch Luxe wheels 8.5 Front 35/19/235 - 9.5 Rear 30/19/265.

Those look great, where did you get them from?

[-null]

Originally Posted by classyfast

Those look great, where did you get them from?

My old E46 actually came with them along with the OEM wheels, so I threw the OEMs back on the E46 to put these on the E90. Not sure where the previous owner got them from.

[snaimpally]

Get Pure Stage 2 if you can afford it - might as well go all out. If you upgrade the turbo, get a GFV DV+ so you can hold boost better. A metal CP is also a must have if you get a tune.
Since you are in CA, you should consider getting an FMIC. The VRSF 5" stepped FMIC is a good option. The N55 runs hot when stock and any mods/tune will just increase heat.
Get a protune from a tuner like PTF. Its a custom tune for your car and your mods. The custom tune is loaded using Cobb AP - PTF offers a package discount if you buy the Cobb AP and tune from them.

[Dowdogg]

Originally Posted by -null

If you get caught in Cali without a cat there are huge several thousand dollar fines. There are several people who've had fines from 1.5K up over 5k. It's not worth risking for an extra 15hp I'd get from a downpipe over a HFC.

I got "caught" in CA, running FBO, the fine was $50 plus $16 certification at the state ref. I have no idea where you are getting those crazy numbers from