SRSmith

Freddy Intake vs Stock Intake (S13 SR20)

First off, I'm not going with the geniune Greddy Intake. I'm not willing to pay $700 for an intake, and from my research I've gathered that the knock offs work just fine after they have been cleaned up.

Instead, I'm looking for opinions on the knock off vs the stock intake.

Here are the things that are pushing me towards the Freddy:
Easier oil changes
Better Intercooler piping fitment (I have a greddy intercooler and piping)
Cleaner look

However, I heard that the Greddy Style intakes cut into the low end power while increasing top end. I personally think the sr20 doesnt have any low end to lose.

Have any of you guys installed aftermarked intakes? If so, did you notice a remarkable loss in low end? My car is at 7 psi making low 200s, but I plan on increasing it later.

Thank you much

nisileighty

Definitely do it

SRSmith

Do you mind elaborating?

nisileighty

The ease of working on the motor goes up all around. Makes changing literally everything on the cold side a million times easier. Easy to run vacuum lines, easy to change oil filter, starter, etc.

The looks go up dramatically because the stock SR intake looks like dick.

Those two reasons alone are worth $119 or whatever the eBay sellers want.

I’ve had both Greddy and Freddy. Haven’t really ran into fitment issues with Freddy like others say they have.

onehundredoctane

From experience. . . you're going to lose low end power on the boost you're currently running if you ditch the stock SR intake.

That said though, if later you up the boost, (I would say 20 psi or more) then def go with the Greddy style intake.

I know from experience on the dyno that with 23 psi, a GT3071R and a Greddy style intake that the LAGGGGGG was real!

Switched back to the stock intake manifold and it made a world of difference with low end power and the boost came in waaaaaaaaaay sooner! Much more useable power.

S14rebuild

Da truth!

But, wuth it just makes the bay look sooo much better lol

onehundredoctane

Looks vs usable power. . .

nisileighty

It’s not just looks

S14rebuild

We know this..hence the info drop. Were are stating looks vs power for his particular setup. But thanks for the useful info to the thread.

SRSmith

Thank you for the reply Octane

QUOTE
"That said though, if later you up the boost, (I would say 20 psi or more) then def go with the Greddy style intake.

I know from experience on the dyno that with 23 psi, a GT3071R and a Greddy style intake that the LAGGGGGG was real!"

May I ask why you recommend going with the greddy with over 20psi, but then you said the Lag was so bad you switched back?

onehundredoctane

Maybe I did a bad job of explaining.

With the Greddy style intake, the plenum is huge and the runners are short.

Think about it in terms of the turbo having to fill the plenum with compressed air before the air can be forced into the cylinder. The larger the plenum, the more air required to fill it. Thus the stock SR20 intake manifold having the smaller plenum, requiring less air to fill it.

Runner length matters also. Short runners are better for higher rpm power, and longer runners are better for low end power.

So going with the stock intake makes the most sense if you are running relatively lower boost.

It was just my experience that the Greddy style intake moved the power band way too high, you didn't feel boost till WAAAY late. I'm talking after 4,000 rpm late.

With the stock intake, boost came in so much sooner, around 2,200 rpm.

Now, if anyones argument is looks, then good luck to ya. There are hardly any aesthetics when it comes to making power.

lewisfk

I was thinking keep the stock manifold and add 70-75-85 mm throttle body.

https://www.efisolutions.com.au/plaz...ttle-body-85mm

e30gangsta

Send your stock manifold to get extrude honed. That's the best option unless you're willing to spend $1200 on the mazworx intake manifold.

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jedi03

+1 on freddy, after my first one wouldn't run without it...fitment made everything easier to access/work on, oil changes weren't a nightmare anymore, can actually change our cooling hoses without disassembling half the engine lol, intercooler piping appears to be more smooth flowing, on the stock turbo iirc was about 3-500 rpm more of lag, but getting a bigger turbo makes the driving really nice for the SR...iirc the stock manifold can flow to ~400hp...

brndck

cliffs:

-stock mani better response

-freddy looks better and easier to work on

pick your poison

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SRSmith

Alrighty, Its obvious that the freddy intake increases turbo lag.

The question now is, by how much?

Looks like Ill need to get one and test that. It would be even better if someone could get a before and after dyno sheet.

jedi03

its really not much like I said above...~3-500 rpm worth...get used to it pretty fast imo

S14rebuild

Fukn spoon fed in this thread

Mikester

If you add a higher volume intake (Freddy), and a less restrictive turbine inlet/filter, you will notice little difference in terms of low end loss. If anything, you will like it better and it will feel a little more responsive once the RPMs come up. No reason to fret about losing a hair of low end... SR’s aren’t known for being great in that arena anyway.

A lot of great points made. In terms of day to day maintenance, the stock SR manifold is a buzzkill. I personally think you’d like the knockoff better.

Mike

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