[bryce]

Originally Posted by lawwailok

here is my little contribution of S1+ ST on 91 gas, car has BMW PE, ETS 5" and BMS drop in. did a datalog on a 3rd gear pull.



here is the comparison between S1 V301 Sport vs S1+ v400 Sport map, same road same condition same 3rd gear pull. just a rough idea of how much boost the S1+ is making over S1 301 and the huge improvement on the torque impressed me a lot!!!

red line is S1+ v400 Sport, blue line is S1 v301 Sport
both runs are on crappy 91 CA gas

Originally Posted by timtech

Mine looks very similar to lawwailok except I'm running the aggressive map.

you guys should both drop down to the sport maps; you have timing drops in the same rpm range

[EastCoast335i]

Originally Posted by enrita

no you need an intake.

I just found the requirements for Stg2+FMIC on Cobb website,
and it says a drop-in aftermarket panel filter would be fine.

[lawwailok]

Originally Posted by bryce

you guys should both drop down to the sport maps; you have timing drops in the same rpm range

Bryce, im already on Sport map. maybe i should get mix some higher octane to the tank. CA 91 gas sucks

[bryce]

Originally Posted by lawwailok

Bryce, im already on Sport map. maybe i should get mix some higher octane to the tank. CA 91 gas sucks

cobb released ACN/91 maps, try those. they're specific for CA/AZ/NV shitty 91 octane fuel

[lawwailok]

Originally Posted by bryce

cobb released ACN/91 maps, try those. they're specific for CA/AZ/NV shitty 91 octane fuel

yea, i notice it... since the 91 gas price is already sky high at $4.69 here, might as well started mixing some 100 octane in the tank while those are $7.89 =)

[enrita]

Originally Posted by EastCoast335i

I just found the requirements for Stg2+FMIC on Cobb website,
and it says a drop-in aftermarket panel filter would be fine.

i would not run a panel with stage 2 plus. The turbos are going to work hard to provide the needed boost. It works surely since cobb tested it for sure but not optimal .

[timtech]

Originally Posted by bryce

you guys should both drop down to the sport maps; you have timing drops in the same rpm range

I'm going to try out the Sport map. I can see some noise on many of the cylinders in that RPM range on every log I did.

I have also pinged Cobb to see what they thought since it's odd to see it happen in both cars.

Interesting, when I read the notes of the maps in APM, both Aggressive and Sport say that 93 octane is recommended. I just put fresh 93 from Mobile (top tier fuel - what I always use) and will see if the gas and lower map cleans up the drops.

[EastCoast335i]

Originally Posted by enrita

i would not run a panel with stage 2 plus. The turbos are going to work hard to provide the needed boost. It works surely since cobb tested it for sure but not optimal .

Hmmm now you got me wondering if i should wait til i get an intake before bumping to stg2+FMIC....

What if i make sure the panel filter is extra clean

Anyone running Stg2+FMIC without an intake here? How is your car running?

[bryce]

Originally Posted by EastCoast335i

Hmmm now you got me wondering if i should wait til i get an intake before bumping to stg2+FMIC....

What if i make sure the panel filter is extra clean

Anyone running Stg2+FMIC without an intake here? How is your car running?

his point is that the car will run alright, but it will cause the turbo's to work a lot harder to hit boost targets. this could cause premature turbo wear if ran too long IMO

[Jeff@TopGearSolutions]

Originally Posted by EastCoast335i

Hmmm now you got me wondering if i should wait til i get an intake before bumping to stg2+FMIC....

What if i make sure the panel filter is extra clean

Anyone running Stg2+FMIC without an intake here? How is your car running?

The stock intake is a bottleneck no matter how you cut the slice. A cheap alternative is running the stock intake with the cover off.

[jgoldsmith729]

Is this a legitimate concern? Cobb - can you weigh in on the difference b/t drop-in or full intake? Also, how restrictive is the 1 series exhaust?

[E90SoFlo]

Guys, DCI are around $65 used in the for sale section, just go buy one.

Seriously.

[08-335]

Originally Posted by E90SoFlo

Guys, DCI are around $65 used in the for sale section, just go buy one.

Seriously.

[Brey335i]

I ran with just a drop in filter while waiting for some stuff to arrive.

Went from UR CAI to Drop in filter to custom Mr.5 style. Only difference shown was IAT. And that can be attributed to the different outside temps.

An intake is a good idea, but I wouldn't say it's critical. So far from what I've seen the Mr.5 style intake does the best job of combining flow and IAT control. Obviously less of a concern if you use meth.

[timtech]

Originally Posted by timtech

Mine looks very similar to lawwailok except I'm running the aggressive map.

I have been looking into the timing drop with Cobb (Thanks Ian) and found that my tank of gas was bad. I switched from my normal gas station a couple months ago since the Mobil has a nice car wash but haven't logged much since. I didn't think there was much of a difference in Top Tier.. I guess I was wrong.

I filled my tank up to the top with my old standard (Shell) 93 octane and dropped in a bottle of Lucas Octane Booster (I logged many maps between each of those) - and here is the final result.



The place I used to get 100 octane from closed down and the old pumps were sitting in the back of the gas station :-( I do notice that the intake temps were higher on the last log (warmer day)... but it was also only the second time to red line after switching maps.

Looking at the raw data for all 6 cylinders, everything was clean. No noise even on one cylinder.


What do you think?

[lawwailok]

Originally Posted by timtech

The place I used to get 100 octane from closed down and the old pumps were sitting in the back of the gas station :-( I do notice that the intake temps were higher on the last log (warmer day)... but it was also only the second time to red line after switching maps.

Looking at the raw data for all 6 cylinders, everything was clean. No noise even on one cylinder.


What do you think?

the whole graph seems much more smoother!
looks like you have a slightly higher boost by using another gas too.

sorry i haven't have chance to pump some 100 octane yet, and it's been raining like shit in Sac, possible t-storm tmr, so no point to waste a tank of nice gas... probably will do it next week when sky is clearing up =)

[venomnightrider]

Just pulled the trigger and ordered a Spearco fmic and raptor bov's to run this stage1+ tune. If I have time i'll try and do before and after dyno's once everything is installed

[Ryan L]

Any dyno results from the Stage 1+? I am about to pull the trigger on a FMIC pending results... (tons of warranty left, not doing DPs any time soon).

[Alext]

FWIW I have asked ESS tuning (I trust them a lot since they tune BMWs and do not sell intakes) if DCI would make much difference for their stage 2 tune (390HP). They recommended to stick with the stock intake with a drop-in as the stock intake flows reasonably well.

[enrita]

Originally Posted by Alext

FWIW I have asked ESS tuning (I trust them a lot since they tune BMWs and do not sell intakes) if DCI would make much difference for their stage 2 tune (390HP). They recommended to stick with the stock intake with a drop-in as the stock intake flows reasonably well.

You cant compaire different companies "stages" , their tune runs less boost than Cobb.

[Jeffman]

Originally Posted by Rob@Cobb

Stage 1+FMIC is more powerful than Stage 2. The FMIC is a decent road block to making power.

The maps will not hurt the car, so you are welcome to try them.

Cheers,
Rob

The map notes and Dyno plots on the Cobb website still do not show 1+FMIC ...?

[Jeffman]

Originally Posted by Rob@Cobb

Not too much. ~10-15 whp. Intakes and FMIC gets you a lot of power on the 335/535. 1 series need a cat back along with the intake/FMIC.

Cheers,
Rob

So are downpipes really worth the extra hassle?