installing AEM intake with existing dual flowmaster exhaust

chmorro · #1 (**permalink**) 10-04-2005, 04:36 PM

Can anyone tell me if it would be beneficial or not to install a AEM cold air intake on a 04 DCAB with an existing 40 series flowmaster dual exhaust system? The guy at the shop showed me some dyno tests from AEM which states it would increase my HP, but I'm hesitant since many of you know, installing a dual exhaust robs the truck of low end torque. The guy at the shop stated that if I install the intake I would gain most of the lost torque back. If anyone knows for sure please let me know, especially Ray the tow moderator guy!!!!

KLS · #2 (**permalink**) 10-04-2005, 05:22 PM

Here's AEM's dyno chart...see for yourself
http://trucks.aempower.com/pdf/dyno/...ndra_V8_HP.pdf

It doesn't do enough at everyday rpms to be worth my money.

I don't think adding one low-end killer to another solves anything except the cash flow problems of that shop owner.

I'd change your exhaust...2" pipes with an x-pipe crossover, or a single 2-1/2" pipe & muff. And I'd stick with the OEM intake and OEM filter.

Ken

dyogim · #3 (**permalink**) 10-04-2005, 06:28 PM

I have the AEM intake, and noticed a slight loss on low end. I've thought about going back to stock. The only thing I like about it is the sound increase from the engine bay when you stomp on the skinny.

KorovaB2 · #4 (**permalink**) 10-04-2005, 09:56 PM

Agreed, I had one and though I was happy with it when it came to high end power with my headers, it only helped kill my low end power. I loved the louder engine though.

RockyMtnRay · #5 (**permalink**) 10-04-2005, 11:34 PM

Quote:

Originally Posted by chmorro

Can anyone tell me if it would be beneficial or not to install a AEM cold air intake on a 04 DCAB with an existing 40 series flowmaster dual exhaust system? The guy at the shop showed me some dyno tests from AEM which states it would increase my HP, but I'm hesitant since many of you know, installing a dual exhaust robs the truck of low end torque. The guy at the shop stated that if I install the intake I would gain most of the lost torque back. If anyone knows for sure please let me know, especially Ray the tow moderator guy!!!!

As the previous posts note, it's extremely unlikely that you'll gain any low end torque from an AEM (or K&N) intake and quite likely that you'll lose even more low end torque than you already have. As someone who's obsessive about low to mid range torque, I personally wouldn't touch either a K&N or AEM intake with a 10 foot pole.

The only intake that might (and I emphasize might) improve your low end torque situation is the Volant true cold air intake. It's quite different from the rest in that it uses the OEM cold air intake hole into the inner fenderwell and it also has an airbox to isolate the intake from the hot engine compartment air temperatures. OTOH, the Volant air box does not have the sound muffling that's inside the stock airbox so it doesn't suffer from any losses associated with that muffling. There have been a smattering of reports here at TS.COM (and elsewhere on the 'net) that suggest that the Volant does improve low end torque. But there have been so few reports...and no hard evidance like dyno runs...so I'm hesitant to say the Volant is definitely an answer.

Oh and by the way, never trust any speed or muffler shop when it comes to mods for a Tundra. Toyota did a far better job of engineering this truck than GM/Ford/Dodge and what works well on the domestics seldomly works as well on a Tundra. I had one speed shop tell me that I'd get a lot better towing if I removed the resonator and installed a dual Flowmaster muffler 'cause that really helped on a Dodge Dakota.

I got out of that place as fast as I could.

chmorro · #6 (**permalink**) 10-05-2005, 04:26 PM

Thank you all for your suggestions!!! It just reinforced my gutt, which was telling me not to get it. One could obviously tell the shop owner was stretching for an answer for me to purchase one, all he could come up with was answers that were totally common sense and something a 10 year old could come up with. I love the sound from my duals just hate the power loss I was given as a result of the flowmaster. You all just saved me some money, thanks again!!