I'm looking at both options and need some users advice. First of all the price difference, Needswing dual CAI sells for $800.00 whereas the TVT's SL55 installation is $700.00. Needswings claims an increase of up to 35 RWHP, TVT states 26 RWHP. Have any of you tried both and was there a noticeable difference. Are the RWHP claims correct?? I do like the original look of TVTs but I'm curious to know whether the top cover still fits on? I think I saw somewhere on this forum recently that someone made a modification to the brackets for the cover to fit. Anyhow, I'm sure I'll receive various opinions but at the end of the day which of these provides the best results. I look forward to your replys.

 

I have had both on my car and the NW performs the best. They are pretty close and it basically comes down to what you want. NW gives better SC sound, better performance and a nice custom look. The SL55 gives good performance, pretty good SC sound and factory look.... You will likely be happy with either.... I have the NW on the Aero......

edit: I am talking about the NW Dual CAI.....

 

If you're worried about O.E.M. look for possible state inspections then the TVT would be the way to go. Because cost was an issue for me, and I'm not racing our 6, I went w/ the single NW but with the bigger, better flowing Xtreme K.&N. filter. I have yet to see a comparison of how much better the dual setup actually does on the dyno, compared with my setup. I'm guessing very minor. But if you're drag racing and can get even .1 or .2 seconds off your time, then it would be worth the extra cost. My .02 cents.

 

Either setup should pass a state inspection without a problem....they suck more air so the engine can perform more efficiently....

 

I do not want to take biz away from TVT, but you may be able to do better price wise on a SL55 intake than $700 if you do not mind making the mounting brackets yourself.
It is fairly easy to do with a few basic handtools. BrianBrave did a nice write-up a couple of years ago on it.

Cheers,
KrzyFast

 

I was referring to the fact that the NW is not CARB compliant, and sold for "Off Road Only".

 

Understood..... I just took both the SSB(SL55 intake) and the Aero(NW Dual) in to DEQ for checking for registartion and they both passed with flying colors... they dont even lift the hoods these day here.... just plug into the OBD port and get the numbers and look for DTC's... they use a sniffer in the exhaust on some cars...

 

I'm glad you had no issues w/ your inspection. I don't know if I would be so lucky here in CA. but I would just swap over to stock beforehand. The only issue would be any surprise inspection! And with CA allegedly being broke, they may start working this revenue maker in more places,more often.

 

SRTSIX lives in CA. PM him and ask him. Or maybe he'll chime in here.

 

THe 35 hp gain was a number that I got on my dyno showing the INCREASE OF THE DUAL OVER THE SINGLE CAI from needswings. That was below 3000rpm, not just for racing. Woody

Weekend, yippie

 

Thanks Woody, you just broke my heart! Hey Rob, Can I buy a 1/2 of a CAI???

 

While Karl (SRTSIX) does not have any performance mods I am aware of, there are definitely other members in Cali with duals that have no issues.

Indeed you can LOL. They make a retrofit kit, not sure if you need to send it in or just buy the additional parts though

(Work is very boring, just trying to be helpful)

 

I tested on the dyno with a bag on the second inlet and then pulled it off to show the power gains it made, dramatic due to the lower restriction. Woody

Please note the bag on the before chart, charts were on same run day. First chart was my baseline.
https://www.crossfireforum.org/galle...o_data_034.jpg

This fall the faster throttle body will make its debute and well see how that does it on the dyno.

 

Hey Woody, Your earlier post claims 35 H.P. gain between the single and dual CAI. Your dyno's show 12.4 H.P. increase unless I'm reading it wrong. And hey; that's great, but the NW dyno charts for the single CAI show an average of 28 H.P. gain over stock. If I add your claimed 35 H.P., you would be getting 63 H.P. gain over stock w/ the dual CAI setup. That ain't happening.

 

I was not talking about the top, this was at the lower end around 2500 as I remember. Autocrossing needs to get off the corner like driving on the street and this gave me a great gain at the lower end. I could not find the two dyno results that I superimposed to show the delta.

Yes there is some gain in the big end but that was a plus overall. Please see the gallary for more photos showing the results. I also have some charts from the Carlisle 2009 dyno jet runs showing the fuel air mixture tracking over the power band.

Woody

 

I read that the same way

 

I think he is looking at power under the curve, not peak. Look at the diff. between the "bag" and the dual at 2K rpm and 2.5K rpm. big difference there and a bit of an increase thru the entire rev range above 2.5K between the 2 also.
I am sure he will chime in, but that is what I have always understood him to mean.....power under the curve, not just peak.

Cheers,
KrzyFast

 

Thanks for the clarification. I don't care about top end. Would rather have it low. I'm going to just have to be satisfied w/ my NW single for awhile.

 

I had a single, went to the dual...noticeable difference in acceleration...but, a single is better than none at all...I don't like the plastic hangin' on top of my engine bay...I like to see the engine, and I like getting the hot air out asap...so, I hung my engine covers on the wall for wall art....took the drip pan off both cars...they might make a good kiddy sled in the winter time...lol....just my preference...each to their own...but amg engine should be seen, not hidden...

 

I feel like maybe I've hijacked Hurricanes thread here..... But, thank you Doc, I feel a little better now..... for a little while anyway. I guess removing the drip pan helps pull the hot air out, yes? I didn't know about this free Mod., good to know.