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Old 08-15-2014, 02:22 AM   #1
aspro
 
Drives: 2011 Yaris RS 5 door 5 spd
Join Date: Aug 2012
Location: Toronto, Canada
Posts: 449
Thumbs up DC header, AEM cai and MI lightweight crank pulley install

Today, a buddy of mine and I installed a DC ceramic coated header, an AEM cold air intake and a micro image lightweight pulley at his shop. Install for everything took about 2 hours and 20 mins and I couldn't be happier. Note: this is on my 2011 yaris rs hatchback MT.

The install of the mi crank pulley and aem CAI took an hour and then another hour 20 mins for the header. I replaced the belt when I did the pulley and the header gasket and donut gasket when i did the header and i replaced them all with Toyota parts. The install was super easy, the DC header took all of the original studs and bolts with no issues, I didn't break anything or have a hard time with removing anything and the fit was just spot on, I mean, DC did a really good job with proper fitting of this product. The only thing I didn't reuse was the original heat shield for the header as there is no way it bolts back to the DC header. But the DC header is ceramic coated so in essence it should keep the external heat down anyway. The mi crank pulley was a breeze, went right in and the aem CAI fit like a glove. The first thing I did before doing all the work was disconnect the battery to give sufficient time for the ecu to reset itself for the relearn process after all the work was done. Note, having a hoist is the best thing in the world. If you have access to one; utilize it!

After everything was bolted up I cranked her up and right away I could tell that there was a huge difference. The pulley allows the car to rev quicker which really helps easing out take offs from a dead start and the car just doesn't feel like a slug anymore in the bottom end. I have zero check engine lights and at first the car ran a low idle when I started it and let it idle for about 10 mins and it actually shut off once or twice. But after driving for about 20 mins she leveled right back out and sits healthy at 600rpm.

The CAI just sounds amazing, not obnoxious but a great grunt at wot and you can really feel it pulling when the car gets to about 2 grand all the way up to about 5k.

The header really opens up the power band just before 4k all the way to the top and sort of changed the note of the exhaust but more importantly delivers a smooth power delivery.

I think the biggest gains are found with everything bolted up and working together. I think, if doing these mods one at a time it will be difficult to guage any gains but when done all together you really notice a huge difference. All of these parts together really made a huge difference. I have been disappointed in the past with bolt on mods in other cars and I was expecting a similar experience with these mods but I was grining ear to ear all day after the mods were done as I really notice a substantial increase.

Big thanks to Garm from micro image for not only being a stand up guy and one hell of an entrepreneur but for also making a quality product. His crank pulley truly is a specimen! Thanks big guy!

I snapped a whole bunch of pics of the header as the install was going on and due to the excitement I never snapped any pics of the CAI and pulley Lol. So I'll post the pics of the headers and then update tomorrow with pics of the pulley and CAI.

Pics:









Pulley (sorry the picture sucks. Didn't feel like getting under the car to snap a pic of it)

For reference, the only other perormance mod related to the engine I have on the car is a TRD axle back exhaust.

Thanks!

Last edited by aspro; 08-15-2014 at 02:05 PM. Reason: more pictures
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