4.6 intake interest

[j_fields1357]

Im having a hard time trying to find a 4" to 3.3" reducer elbow lol. would a 3" work? Also would you happen to know what model k&n filter you used and how you attached the breather hose on the side of the tubing?

 

[Tailwalker]

Welded in the bung for the tube. We used 3.5", not 3.3". I do not know the model filter; it was the largest we could get to fit.

 

[j_fields1357]

Okay Thanks.

 

[Joe29365]

Welded in the bung for the tube. We used 3.5", not 3.3". I do not know the model filter; it was the largest we could get to fit.

Do you still have your 4.6 and have you don’t any more tuning/mods? Would you be able to send me the info on the tube sizes for the intake? I have a friend here in Columbus, OH that dunk tunes at a local shop and he wants to time my 4.6. I have 2nd cat deletes, Magnaflow cat back with no resonators, drop in K&N. Wish there was more out there for these cars. I hope to do the ESC remote shut off soon. Have 255/19 fronts and 275/19 rears. When you dynoed yours were you using 91 or 93 octane?

 

[edizzle89]

SXTH's intake has been proven to add pretty similar power to what Tailwalker saw with his intake. It's a full 4" silicone tube from the TB to the MAF. The only thing is it doesn't have a heat shield, which could be made later, but I did some looking into the IAT and even after sitting and heat soaking for a hour with just a few minutes of driving the temps dropped within 10*F of ambient.

 

[Joe29365]

SXTH's intake has been proven to add pretty similar power to what Tailwalker saw with his intake. It's a full 4" silicone tube from the TB to the MAF. The only thing is it doesn't have a heat shield, which could be made later, but I did some looking into the IAT and even after sitting and heat soaking for a hour with just a few minutes of driving the temps dropped within 10*F of ambient.

Thanks, I will try to look up his intake.

 

[j_fields1357]

Thanks, I will try to look up his intake.

Here is a picture of my intake. Its very similar to Tailwalker's

 

[Joe29365]

Here is a picture of my intake. Its very similar to Tailwalker'sView attachment 17469

So you have a 90 degree silicone hose. Is it 3.5” at throttle body to 4” or just 4” on both ends with an inner spacer on the throttle body? The. It looks like metal 4” pipe the. 4” to 3.5” reducer at the mass airflow sensor? Looks like you just put a miniature filter on the driver’s side valve cover instead of running the hose to the intake?

 

[edizzle89]

One thing about that breather on the driver side valve cover. That is the fresh air port for the crankcase ventilation system. You can see the line that goes to the intake manifold on the passenger side valve cover which is under vacuum, the driverside line is where that vacuum pulls fresh air from (originally hooked to the intake pipe). Now that the driver side line is vented to atmosphere you might run into an issue with the engine getting unmetered air as the crankcase can now pull air into the intake manifold that hasnt been seen by the MAF. I would try to find a way to get that driver side valve cover connected into the intake line again (after the MAF like OEM).

 

[Bleu]

View attachment 4442
Good news is that there was a lot of room to work with

View attachment 4443
View attachment 4444
View attachment 4445
View attachment 4446

The blue vacuum line will be black on the final run. All bare metal will be painted black as well. We figured out how we want to to the shield, but I picked up the wrong size. Next one will be taller to come closer to the hood

How could I order this

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[Jon2523]

This site should have most everything you need for the intake hoses and piping:

Intake Hoses | IntakeHoses.com - Couplers, Elbows, Silicone or Rubber, Tubing, Clamps

Only thing you would need to purchase elsewhere is the filter and possibly the reducer from 4" to 3.5".

It shouldn't be too hard to install a vacuum line into the intake elbow so the system remains closed unlike the breather used in the above picture. I just bought my 2011 Genesis 4.6 and all I've done is pull the intake mufflers off and capped the openings and pulled the magnetic flap mechanism out completely.

If it's sound your after then putting a hot air intake like above should do it. If I end up doing an intake like above I will get dyno results before and after with only the intake being the difference so the community can see some results (I have access to a dynojet for free).

Typically you aren't going to see a real difference on the road or track with just an intake alone, but every motor is different. The true test of performance out of modification is trap speed difference before and after a single mod. An intake giving you 10rwhp more should typically give you close to if not right at another mph through the traps (ET does not matter) if all things are truly equal. That little equation is typically true of lower HP cars like a Genesis 4.6. When you get up into the 600hp+ realm the amount of rwhp needed to gain another mph needs to be a higher number than 10.

For me, I'm just after a good sound. The car is a good performer for a luxury sedan, so some better engine noise is worth the hot air intake that may or may not give me better performance.