[BQTuning]

Originally Posted by flash1214

So I decided to look into air intakes (bms dci) instead of going drop in air filter and now I run into threads that are saying DCI can cause loss of power on a 335is so now I am all confused. My car would be stock with Cobb AP and either intake or DIF. What do you guys think about DCI possibly affecting power and if not am I making the right choice with the BMS DCI to go along with Cobb?

Lastly, can I go stage 2 with either a Drop in or intake only? Thanks guys. Hopefully someone can clear up this confusion for me.

Per Cobb; a drop in air filter ie K&N, is fine with Stage 2+ FMIC or any of their stages

DCI pull air from inside the engine bay. The air is "LOW PREASURE" air vs the stock or after market CAI pulls HIGH PREASURE air.

A CAI will give better coefficient cooling, better for the turbos, less timing to be pulled.

Here is a perfect example. On May 6th some of our locals went out to PBIR drag strip to attend a private event.

Average temps were 90°. One member who was using DCI reported his IAT was 160° - 170° at the end of the 1/4 mile

I was using a Dashdyno to record my IAT at the end of the 1/4 mile run like he was and it was 132° - 138° . I was using the aFe Stage 2 Sealed Intake (CAI)

Here is the orginal post:

Originally Posted by BuraQ

Ok so I guess my readings were correct then on the Dashdyno I was using:

AFM @ WOT 138-142 avrg / Peak 160
Ambient Temps 91-92 degrees
Intake Temps 108 - 123 (normal driving and idle) / @ WOT 132-138 degrees

Yes DP would help as the air would get through faster instead of being bottlenecked

Why do people go with DCI cheap ? They do get substantial gains, most of them are leasing {so why care about turbos if your not keeping the car, so why give a hoot}, but not without compromise.

[spool twice]

Did you have your Dinan FMIC during those runs?

Originally Posted by BuraQ

Per Cobb; a drop in air filter ie K&N, is fine with Stage 2+ FMIC or any of their stages

DCI pull air from inside the engine bay. The air is "LOW PREASURE" air vs the stock or after market CAI pulls HIGH PREASURE air.

A CAI will give better coefficient cooling, better for the turbos, less timing to be pulled.

Here is a perfect example. On May 6th some of our locals went out to PBIR drag strip to attend a private event.

Average temps were 90°. One member who was using DCI reported his IAT was 160° - 170° at the end of the 1/4 mile

I was using a Dashdyno to record my IAT at the end of the 1/4 mile run like he was and it was 132° - 138° . I was using the aFe Stage 2 Sealed Intake (CAI)

Here is the orginal post:



Why do people go with DCI cheap ? They do get substantial gains, most of them are leasing {so why care about turbos if your not keeping the car, so why give a hoot}, but not without compromise.

[BQTuning]

Originally Posted by spool twice

Did you have your Dinan FMIC during those runs?

yes.,

[spool twice]

I'm assuming GetSomeE92 has a stock FMIC since he state's he needed to upgrade his FMIC?

[BQTuning]

Originally Posted by spool twice

I'm assuming GetSomeE92 has a stock FMIC since he state's he needed to upgrade his FMIC?

will look back through his posts, I can't remember if he also was running stock fmic or not

[RnmEvo9]

Originally Posted by BuraQ

will look back through his posts, I can't remember if he also was running stock fmic or not

All he had was JB4 and DCI.

[BQTuning]

Originally Posted by RnmEvo9

All he had was JB4 and DCI.

Yup, its posted in the quote above that he needed to do an upgraded FMIC

[spool twice]

I would imagine the substantial difference between the IAT's above are due to the inefficiencies of the stock FMIC vs. the much better Dinan FMIC, even though there can be differences in IAT's in CAI vs. DCI.

170 degree's is crazy, glad I have some assistance in dropping my IAT's during WOT runs.

[eamon]

Originally Posted by spool twice

I would imagine the substantial difference between the IAT's above are due to the inefficiencies of the stock FMIC vs. the much better Dinan FMIC, even though there can be differences in IAT's in CAI vs. DCI.

170 degree's is crazy, glad I have some assistance in dropping my IAT's during WOT runs.

Edit: NVM
Was thinking oil temp

What are ok oil temps to be running?
I manage a constant 240 or so and up to 260 with quite a few WOT runs
Don't know if that has any significance or relation to IATs, just hoping I'm not running to hot.

Used to have and aFe stage 2 with heat shield, but it just didn't seem logical to me that my car was just sucking up all this hot air from the engine bay. People told me the car needs to breathe more, but I feel like it's just counterproductive when the car is more stressed by the heat. Will probably do a STETT or Mr. 5 in the future, but for now does a drop in make a notable positive difference over stock, to help the car breathe?

[spool twice]

when boosting higher than stock, yes, it can help. With me, it helped with faster spool times and lower wastegate adaptation value's which allowed for the turbo's to reach target boost and to hold target boost easier.