Originally Posted by m4a1mustang (Post 1473912)

There's a "rule" that you need a tune if you do Intake/HFC/CBE because it is usually enough to throw your a/f out of whack to where it needs correction. It's possible that you might need a tune after just two of the three, but in general you're usually OK unless you do all three.

Originally Posted by UNKNOWN_370 (Post 1473918)

Ok... I usually do just intake and exhaust and leave the HFC off so I don't have to deal with swapping cats at inspection time. I ran a tune before but I did it to get higher revs out my my G'S

Originally Posted by m4a1mustang (Post 1473659)

I would go with the Stillen G3. They are the best available for the 370.

Something to consider is that the engine bay of the 370 gets extremely hot... so hot that any short-tube intake is going to get heatsoaked. The Typhoon might show some gains on the dyno (with the hood open and a massive fan blowing cool air at it), but in real world situations it could very well lose you power since you are breathing in all of that hot air.

The beauty of the stock airbox system is that the filters are contained, and they draw air directly from the outside of the engine bay. They are pretty efficient and flow pretty well up until the last 500-1000 rpms of the range. That's where the aftermarket systems will really show some gain, and the G3s do it best. They keep the filters outside of the engine bay which is important because they won't be subject to the same heatsoak issues as you would with the Typhoon and other short tube intakes.

Install will require a little bit of work, but it's very simple if you take your time and be careful.

Originally Posted by ben1620 (Post 1479890)

What if I rarely redline? Are the G3's worth it for mid-range gains? I have stillen CBE and stillen HFCs in the mail. I've been looking for G3s to complete the trifecta and have it uprev'd but they are tough to find used. Thx

Originally Posted by m4a1mustang (Post 1480000)

I'd say no. Get K&N filters and Z1 post maf tubes and call it a day.

Originally Posted by m4a1mustang (Post 1480000)

I'd say no. Get K&N filters and Z1 post maf tubes and call it a day.

Originally Posted by UNKNOWN_370 (Post 1482252)

I ran G3's on my G37, you don't feel any benefit unless you are flooring the car and you pass 4600 rpm. Right now I have the mishimoto intake hoses and K&N filters. It cost me a total of $198 vs. $575. I'm happier with the hose setup. You get a slight increase in peddle response which is definately welcomed. A subtle boost in power in low rpm's. You actually lose power with the G3 down low. And a modest gain in the middle to high revs. The G3 will give you a stronger boost up high but... add an exhaust and tune with the hose and filters. I think the overall power delivery will yield more realistic use of power vs low rev power loss and higher rev power boost.