Customer Review: Aquamist HFS-4, Howerton 2.2gal tank, Dual Cone Intake and PTF Pro Tune – BMW 335i

We’re pleased to share another great review from Derek (@redlineryder), a recent tuning customer of ours. Thanks Derek for sharing your experience and best of luck with your N54 ;)

======== Derek’s review ======== Source: BimmerBoost.com

My car before the install was 100% stock with a Cobb PTF 94 octane tune. I’m still under extended warranty so this setup was perfect and made good power. It’s crazy how just changing the software can wake this car up. However, like so many of you already know, it’s never enough and I wanted more.

I didn’t want to install catless downpipes or an aftermarket intercooler because of possible hassle from the dealer, I figure they will see removing of emissions equipment worse than some funny lines going into the charge pipe Click here to enlarge 

I ordered the following: 
– Aquamist HFS-4
– Howerton Engineering 2.2 gal. tank enclosure
– (2) Aquamist adapters for silicone/rubber hose
– HP Autowerks silicone meth elbow
– BMS DCI

ProTUNING Freaks are local to me and were nice enough to tackle the lengthy install. I wanted the install to be clean and PTF kept me updated throughout the day. I dropped the car off early Saturday morning and came by early evening to see it finished. We hit the road for some tuning afterwards. It was a long day and I appreciate the work they did, it turned out great. 

I haven’t had a chance to dyno it yet since I’m on snow tires but plan to see what it puts down once the summers are on. I can say that the meth + DCI has smoothed out the power band and now it pulls well past 5,000 rpm whereas before it felt like it was falling flat on it’s face, it also sounds alot better with the added timingClick here to enlarge

I’ve had the setup running for just over a month now and wanted to wait before doing a review. No regrets, the install is clean and runs flawlessly. The failsafe is cool and turning the gauge off acts like a quick valet mode. I also ordered some black wire cover to put over the meth lines in the engine bay to make it look cleaner. 

Disregard the grim in the pictures, we Canadians are subjected to alot of $#@! on our roads.

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I plan to install some M3 rear suspension bits next, aftermarket clutch then DP/intercooler and retune.

PTF N54 Pro Tune with 50/50 (Boost Juice) Meth – single 1.0mm nozzle, full boltons – delta of +153whp +171wtq over stock

Quick update from yesterday.

AR Catted Dp’s
Aquamist HFS-4 System w/ One 1mm nozzle 50/50 boost juice from snow performance
K&N Intake (soon to be bms dci)
ER Charge Pipe w/ Forge Diverter Valves
ETS 5″ FMIC
BMW Performance exhaust (with secondary cats in place)
PTF ProTune

Bone stock baseline showed 264whp/268wtq same day same dyno. Thought I’d throw this up as it was one of the only cars we tuned on a 50/50 meth mixture (usually do north of 80-100% meth mix) and just a SINGLE 1.0mm nozzle. With more meth and/or higher meth concentration more is available through timing. A nice DCI would help another 10-15whp at peak as well but we’re very pleased with a pretty kick ass delta of +153whp +171wtq over stock