adg44

I picked this up about a month ago and just got around to installing it the other week. This was my first time really doing anything on the Porsche, but it's amazingly simple. This may have been one of the easiest intake installs I have ever done. It's nice too, cause you can sit on your chair and the engine is at the perfect height.

Before:



I will say that the EvoMS instructions aren't that great, and you have to go to their website to find them. However, there are barely any parts and it's rather self-explanatory.

The EvoMS V-Flow:



Airbox removed:







Remove the MAF from the stock airbox with the included torx safety driver:




Clean Throttle Body:



I then did a test fit of the replacement air inlet, and it wouldn't fit. That's when I realized the bracket that they provide is for relocating what appears to be the secondairy air pump:



The replacement bracket just adjust the angle a bit and slightly moves it back so that the inlet tub can fit properly:





Now you just drop in the air inlet and you're almost done. It takes some twisting and contorting to get the air filt in the air box area, but it will fit. Then just secure it to the throttle body connector pipe and you're golden.

One thing I'd like to mention is that the MAF hole in the connector tube is very tight. I was unable to just push the MAF in, as the rubber o-ring just wasn't letting it happen. You don't want to use oil or anything on this, as it can drip onto the sensor, so all I did was take some general purpose cleaner and sprayed it onto a towel, then carefully and gently rubbed a small coating on the o-ring. After that the MAF just popped right in, and the cleaner will just evaporate.

All done:





As for my impressions - the sound is downright amazing, especially when coupled with the sport exhaust. It's only loud when you get on it, and then it's more throaty than it is loud. It is perfect.

One thing I noticed is that the intake does not include an air straightener for the MAF, which is integrated into the factory airbox, so the idle flucuates a little bit. Nothing that you can feel, but you can see the tach needle searching a little bit. Throttle response was increased and it definitely seemed to add a little bit of kick.

A week after I installed the intake, I talked with Garret Lim from GIAC and then went ahead and flashed my car. GIAC claims 10-12 hp/tq increase at the wheels, and I beleive it. Throttle response is now instantaneous and the rev limiter was increased to about 7600 RPM. Power deliver is butter smooth and very strong, especially at top end when coupled with the intake and exhaust.

I would consider these two modifications "must haves" for anyone that is interested in getting some more power out of their 911. You won't be disappointed.

Links:

www.giacusa.com
www.4induktion.com (flashed my 911, GIAC dealer)
www.evoms.com

- Anthony

Jon996

Thanks for the great photos! I will add this to my projects file for sure.

Yoops Racing

I am also looking at adding the flash to my 99 C2. I am just stumped on which way to go....there are a lot of companies that offer this.
Giac claims 15-20hp w/ cold air intake on a 1999 which I have as well as a RSS plenum and sport exhaust
Curious what kind of pricing this flash was for you? It looks like 1000 clams is the avg price for most of them... It sounds like you are a happy camper

thanks for posting -

Malakas

Great photos. Your throttle body is super clean... shoulda thrown in a RSS plenum while you were there.

Marlon

How much was all that stuff if I may presume to respectfully inquire? A 'general' ballpark figure would suffice.

Marlon

Your a/c pump pulley appears to be slightly 'rusty' - how did you let that happen????

Jake Raby

I just finished developing some flashes for my 99C2 a few days ago that work in conjunction with a modified EVO intake.

When I started with my engine it was making 245 RWHP on my dynojet as a bone stock 55,000 mile car/ engine. The only mods it had was our spin on filter adaptor and the LN Engineering IMS retrofit bearing.

Last Saturday after optimizing the flash, modifying the EVO intake and adding a new under drive pulley I put down 282 RWHP from an otherwise bone stock 3.4 engine... If I have time tomorrow I'll dig up a series of plots depicting the evolution of the engine's performance over a two week period of development.

jrgordonsenior

Jake I'm just finishing up putting together a "996 Spec" for our new POC class. I'll be testing it Friday at Buttonwillow. Two recent 3.4 builds dyno'd at 265 and 258 RWHP with stock air boxes and ECU's, and open exhausts. I would be inerested in hearing more about your flashes and what gas you used. The group is having a meeting at Laguna the following weekend and we're considering flashing options, air boxes, etc....

Jake Raby

93 Octane pump gas right out of the local Exxon station...

I was stuck at 266 HP for a few days, which is about the max I had seen historically with the 3.4 base engines. The flashes I am developing are a result of direct work with EVOMS. I'll be trying several different flashes at a DE this weekend as I can upload them at the track, right in the hot pit in about 45 seconds start to finish :-)

ivangene

nice write up and pics... that looks fairly clean - does the "seal" prevent engine air (hot air) from entering the intake?

adg44

Chip was about $1,000 and the intake was roughly $600.

- Anthony

adg44

Correct - this seals against the lid and it uses the factory fresh air inlet, so it is pulling "colder" air. That is the reason why I paid the extra money for an Evo intake rather than something like the K&N typhoon. I've had Evo intakes on some of my previous cars and their quality is top notch.

- Anthony

ivangene

doesnt look like a very tough job.. that K&N thing is a joke...they send you a pile of sheet metal and screws and tell you to built your own box OH and destroy the car while yur at it with a drill ?? like there were no extra holes that could have been utilized ??

how the sound? do you have a sound clip

SH || NC

Looks like a clean install; nice work. Any chance you did some stock dyno pulls before the install, and will you be doing post-install pulls?

jrgordonsenior

I like the EVOM air box on my 997S and I'm sure it benefits your motor too. Have you opened up your exhaust? The motor needs to both inhale and exhale freely to maximize it's potential....

Jake keep me in the loop for my meting the following weekend. I'd like to be able to present you results preferably with graphics and a cost....