Best Bang For Your Buck 4 Cylinder Mods

Performance motor wise nothing yet. Will be doing the exhaust and an afe pro s type dry filter drop in filter. That should give the high air flow and hopefully let let particals in then a full cai setup. All the trucks technically come with CAI anyways. As far as suspension I have 5100s on all the way around at the moment, with trd or coils up front. The front are set at 1.75. I did not have those on for the cleghorn trip though.

 

Yes. I had a professional with a mandrel tube bender make up the whole system. The pipe needed compound angles as the clearance was really tight. The guy eyeballed everything and built it from scratch. It sounds great and nothing knocks on anything else.

 

have read this whole thread as I'm looking for tips myself. Great information gentlemen. 1 question why is the afe drop in filter better than an entire cai where youd have a more direct unrestricted flow. Just trying to learn

 

http://urdusa.com/store/Forced-Induction-URD-Supercharger-Kits/c168_2/index.html

Most gain per dolla dolla bill!

 

YES!

 

Thanks for the read! I just read the whole thread again to see if I quoted any info that I found over a year ago. I didnt ,but it all depends on if you are going to off road or not. Offroad wise the stock airbox with stock air filter is the best at keeping the most amount of particles out. A drop in high flow air filter would be best bang for your buck in the sense that you dont have to buy a full "cai" to get high flow air. A stock air intake is technically "cold air". The box pulls air from the fender and is "completely" shielded from the heat of the engine. The problem with aftermarket "CAI" and high flow filters is that they let more particles into the motor. Which you do not want. Also with aftermarket cai they say they give you up to a certain amount of hp. That can be misleading do to the fact that it isnt a for sure number. K&N's and other oiled cai/airfilters can lead to early MAF sensor failure due to the oil being drawn threw and "clogging" the sensor.
Sorry for the long post and I will trying and look up more info again and post it. FYI I have not gone with either a "cai" or a high flow filter. I off road quite a bit so I will be leaving it stock for now. Maybe one day I will have a snorkel.

 

I like the painting of your truck in your sig! Looks like mine, except I have an access cab

 

Lol.. Thanks! It's a phone app.

 

What?! What app is it?

 

It's called "SuperPhoto."

The filter is "painting."

 

I read in other threads that the drop in was better and the general idea of removing the secondary filter combined gave a small boost in performance. Not sure if the good outways the bad in that discussion. I've had a drop in k&n in my scion for almost 200k miles and it's presented no problems i did notice a tiny bit better throttle response with that

 

Hey Greg, I never thought to ask you until now did you run the dyno test stock and only change was the muffler, or were other performance mods done on top of the muffler changes?

 

All of the muffler dyno tests were done with exactly the same bolt on components installed:

Injen long tube intake
tooter intake manifold spacer
LCE long tube header.








The relative differences between them should still be about the same even on a stock engine since a muffler is the component which is the farthest away of the engine.

Greg

 

I'm at 238 hp with a lce header, magna flow muffler, URD mk3 S/C

 

Compared to the supercharger, it wouldn't matter what muffler you used!


Greg

 

I think this magna is holding me back

 

I wouldn't bet on it...
I like normally aspirated engines because their service life is longer. I use my truck for work so I want it to last more than I want it to go fast. All the mods I did don't make it any faster. It just pulls way stronger at lower rpms which is exactly what I need to get the job done.

Greg

 

i've been reading your research since i've been a member here. so far trying to follow your guidelines for performance. i opt'd for the afe dry filter since i want to off road some and conditions can get dusty at times. the lce header is next on the list. for a 4wd what effect or benefit would your spacer give me? thanks

 

This is how much the torque peak rpm was lowered for each of the components so you can compare the relative improvements to each other

Stock 3,800 rpms
LCE long tube header 3,150 rpms -650 rpms
tooter intake manifold spacer 2,900 rpms -250 rpms
Flowmaster series 50 muffler 2,800 rpms -100 rpms

The header yields the most improvement per dollar spent so it's the best investment. All of the testing was done with an extra long 2 1/4 inch diameter exhaust running all the way out the back bumper.



This is slightly smaller than the stock 2 3/8 diameter exhaust. Large diameter exhausts kill off low end torque in exchange for high rpm horsepower. I don't care about top end performance, only low rpm pull from idle to 3,000 rpms when the exhaust is underutilized. So I lengthened the plumbing in four places on both sides of the engine...

1. intake,
2. intake manifold
3. exhaust header
4. exhaust pipe

...in order to enhance the low end torque. In my work, the truck is crawling around steep winding roads carrying a heavy load at very low rpms all the time so this setup is perfect for my needs.

Producing more torque while reaching peak output at only 2,800 rpms makes for quite a different engine.


Greg