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To start off, purchased this from tunerzstore who I found via the forum here. Awesome people, quick as h**l contact, fast shipping, will buy from again.
Moving on. Pretty sure this was drop shipped straight from manufacturer so at this point anything bad to say is directed toward r2c...
#1. One intake was slightly bent on the throttle body end. Fixed using small hammer. Wasn't too happy about that.
#2. The valve cover vent system on all aftermarket intakes are terrible in design from what I see. Why do none of the companies weld the bung directly under the pipe? It would be a freaking direct shot to the valve cover bungs without making stupid 90* bends with the rubber tubing...I digress here. (Should just build and sell my own for half the price)
#3. R2c's directions are kind of lacking in my book. I am extremely mechanically inclined but even reviewing these instructions left something to be desired.
#4. R2c gave me too many of certain washers and not enough of others. Please supply at least one extra locking washer to be used on the maf sensors. Just a cheap peace of mind thing. Instructions don't say to use them but every car as well as this in factory trim use locking washers. Supply them in future r2c.
Enough bad talk now. On to good.
#1. Fitment was pretty good. Adjustable bracket definitely was a good call. The air box design could be improved on but is good none the less.
#2. The black paint is fairly durable.
#3. These things sound ridiculously mean under WOT. Especially at half throttle the growl sounds v8ish with stock exhaust.
#4. Forum price is excellent. Contact tunerzstore people!
I am going to get a follow up dyno soon to report my unbiased gains/losses. Either way, power gain will be minimal. This is a small displacement NA motor. I did it for the sound honestly. Sounds beastly.
Have you dyno'd yet? I've got a purchase pending on these and would be interested to see results. But yeah, I'm not trying to do anything major mods so I want it for the sound that everyone seems to rave about, plus a power gain, even if it isn't very much.
Dyno is on hold pending another car being finished. We are dynoing same day. Will be in about 1-2 weeks. I have a muffler delete as well but that shouldn't really impact numbers.
The humidity that day was like 8% higher but for whatever reason the intake returned an a/f ratio around 10.5 across the run while the stockers were closer to 11.5. This tells me the stockers flow more? I am confused. COULD however mean that with tuning the r2c's could possibly outperform.
I dynoed my car with stock intake and stock air filters and did 3 pulls. Then replaced the air filters (while on the dyno) and did more 3 pulls. With the panel K&N and it made more power across the RPM range.
The MAF placement is VERY critical to accurately report the air flow. With the K&N the mixture was slightly leaned out to around 12s, up from mid 11s.
An AFR of 10.5 is way too rich for a non-FI engine. Was that measured with their AFR sensor in the exhaust or did you data log the onboard AFR sensor?
Used a tail pipe sensor. Same sensor I used for the baseline though. Yes placement is critical but that is up to the builder not end user. There is only one way to install those sensors. I just think I bought the wrong vehicle to attempt making any decent power with. In the market for something else now.
Oh, I wasn't saying that you had any say in the placement the MAF. The R2C folks hold all the cards on that one.
Keep in mind, with the AFR sensor shoved in the exhaust, they will tend to read RICHER than it is. This is due to it being placed AFTER the cat, which by design consumes oxygen, making the AFT show a slightly richer reading by about a point. Also, not all shops calibrate the AFR sensor before EVERY run.
As for mods and making more power, generally the G37 responds well to breathing mods, like intake and exhaust. My 11 G37S picked up 22 WHP and over 10 foot-lbs of torq in the midrange with K&N panel fitlers and a Stillen exhaust.
Sounds like you made out well. With r2c intakes, muffler delete, 1/8 tank gas on a 88* night with humidity at 75% at sea level I was only trapping 14 flat at 100mph. I expected better even if it was only slightly.
05-21-2016, 06:25 PM
