Well I agree with them not moving much because they don't move under wot. When the motor rocks back under load it stays there. The MAF should see no change. Now during a shift or let off, yes, there should be huge swing in the pipe because the motor relaxed. Unless you're seeing voltage changes on the street and messing things up, ill never know. I don't do dyno's. they are pointless to me and I hate them. I use road dyno software that can calculate the weight of the car, aero dynamics, wheel diameter size, tire size, looks at wot, speed, rpm, etc etc and can tell you a real, true hp and tq since it can calculate the time it took you to go from say 2000 rpm to 7500 rpm. Its actually accurate because you have real wind pushing against you, ambient temps and not 300 degree dyno rooms, and real world roads. Only thing you must do is get all the info right, wheels, weight, etc. also find a flat road and dyno in both directions and average runs for a correct hp and tq. Normally these run like or lower than a mustang but is proven with 1/4 times and trap speeds.

Thanks for the heads up though. We'll watch the volts.

well if you want an effective DIY intake, you will at least need post MAF Tubes to help with flow

with the intake, it costs about the same as HPS tubes with free shipping and including your extensions it will cost you around $150 give or take if you need new piping or not(i dont think you will but there is a chance you might)

plus it will lean things out mechanically so you might make as much as stillen G3s(its 2.75" piping with a 2.5" Maf adapter which is bigger than the stock tube)

Red Shortram Air Intake Kit Infiniti 08 13 G37 07 08 G35 Sedan RAM Cool Dual V6 | eBay


there are cheaper ones on ebay as well, i dont know the intake size but i have seen other knock off intakes go for $90

Use your brain elsewhere. Just buy the post maf tubes and kn drop ins.

Not worth it to me. :ugh2:

Yeah I'm not messing with larger pipe. $10 says tuning will be a must, that short MAF housings not enough. Plus, now takjak has turned me onto the silicone having less heat idea. The less metal the better. He'll if I could make silicone tubes I would! $100+ is a ******* joke for those tubes!! If I can buy 6 couplings and not go over $40, no way them post tubes should rape your *** like that.

could you explain why it would need to be tuned?

i believe they are knock offs of either the K&N SRI or the Takeda SRI(im leaning more towards the takeda because of the size and style)

i suggest looking up Modshack's SRI

he already messed with silicone tubes and compared them to post maf tubes, they are basicly the same iirc

With such a small width MAF section and so large before and after, I can promise the voltage will drop. A larger tube drops volts so the ecu will think the motors at a smaller flow rate and will add less fuel than whats needed, run lean, it blows up. Typically a MAF section needs to be at least 9" long and nice and straight.

it actually provides more velocity than a straight through pipe would

I'm not in aero so id have no idea unless i saw hard data but the ecu isn't going to be able to compensate that much MAF volts in a rise or fall. Once out of the parameters of the ecu good luck not blowing it up. The car isn't turbo'd so there'd be no reason to go any larger than 2.34" ID. Since I've seen some cars run mid 13's AFR I wouldn't F with that ****. Not unless you're at the tuner tuning at that time. If stillen thought it was a good idea they'd of done it! But since they use 2.34" ID from just after the filter all the way to the TB, I'd say they figured it out.

Dynos are not pointless. They provide a method for quanitifying engine output meaningfully. Poor interpretations of their readings abound, but they are far from pointless.

So long as they are clamped down, it should be fine.

Any interest in buying my MAF tubes so as not to have to hack up your airboxes? I can provide pictures later if you might be interested. They are exactly what you will have to create on your own...

EDIT: I have better pictures somewhere on my computer, but here's an example of one of them (don't think I have the filters anymore)

http://www.the370z.com/attachments/i...take-proj4.jpg

Its the exact same pieces you will have to cut from your own airboxes. These are already cut and sanded. Make me an offer and they're yours.

I was kind of hoping to buy some but only to have extras incase maybe I could put kits together for other people. That way they'd be cheaper since I'd buy so many couplings and length of pipe. But I'm sure I'd have to pay for a vender license here and that probably wouldn't be worth it because that and I've seen one guy ask $200 for his in boxes. At that price I'd never get my hands on enough.

All done

Pics?

First post.

i might do something like this in the near future if i decide to go with LTI

good write up