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Old 06-24-2017, 07:41 PM   #1
SergeiF
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Default New inlet pipe on JDM EJ207 (GR STI), or not?

I am looking at getting new aftermarket inlet pipe for my JDM GR STI EJ207...

The car is currently stock except for TGV deletes and Blitz Nur-spec C exhaust (and of course a mild ECU tune).

I was thinking of getting a hard pipe (something like AMR), but looking at pictures I do not like how they use cast bungs on it (they do not look right).

On other hand the silicone pipes look great, except people reporting them collapsing?

How true are Perrin claims https://forums.nasioc.com/forums/sho....php?t=1473991 ?

Is there any pictures of stock plastic pipe side by side with aftermarket one? The stock looks a bit on small side...
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Old 06-24-2017, 08:29 PM   #2
jkenna860
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Why not just keep it plastic or silicone? Those two materials transfer heat at a much slower rate than metal. Less heat in means more performance out. Just save your money. Im running the tomei silicone inlet with no problems. Perrin has been good too from what i have seen.
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Old 06-25-2017, 12:29 AM   #3
monkeyposeur
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Ebay godspeed inlet works for me @ 350 whp. Only $75.

If you are worried about a silicone inlet collapsing use a couple of $3 large hose clamps to reinforce it.
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Old 06-25-2017, 01:32 AM   #4
SergeiF
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Perrin has internal steel reinforcement to prevent collapsing, I might look into that...

The goal is to maximise the efficiency of the stock turbo (VF49) before going to another one.

This is for a street car, in a sense it is used on public road mainly, while in reality it is used a lot of on mountain/hilly terrain with lots of corners (as known as state "highways" in NZ).
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Old 06-25-2017, 07:26 AM   #5
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None of the quality brands will collapse. I put a Tomei inlet on my wagon yesterday and it is quite stiff.

I've never understood how putting hose clamps around the outside of a piece that will collapse from the inside is going to help. Just buy a quality inlet.
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Old 06-25-2017, 01:32 PM   #6
monkeyposeur
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Quote:
Originally Posted by A-man07 View Post
None of the quality brands will collapse. I put a Tomei inlet on my wagon yesterday and it is quite stiff.

I've never understood how putting hose clamps around the outside of a piece that will collapse from the inside is going to help. Just buy a quality inlet.
Because it doesn't allow the sides of the inlet to deform into an oval shape, which is what would happen if it collapsed. By keeping the inlet circular there is no room for it to deform. At least that is the theory behind it.

I've never had mine collapse but put them on anyway. When I did my build I had the cheap ebay inlet lying around from a previous project and figured I'd give it a shot. It's the only cheap part on my build and hasn't given me any issues so in my case I saved a couple hundred bucks.
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Old 06-25-2017, 06:45 PM   #7
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Edited, it wasn't important.

Last edited by A-man07; 06-25-2017 at 08:23 PM.
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Old 06-26-2017, 09:48 AM   #8
Titter
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collapsing inlets is a thing of the past. most high end inlets are all wire reinforced.
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Old 07-03-2017, 07:12 PM   #9
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So, I narrowed down to two options:

1) Perrin
2) Tomei

Perrin is more expensive, I can get one from Amazon for about $220 USD and get it shipped to NZ via Youshop.nz (NZ Service forwarding). The listings on Amazon will not ship to NZ unfortunately. There is absolutely 0 presence of Perrin in NZ. There is only Samco for astronomical money (and of course whole bunch of no-name Chinese stuff). I found Tomei listings in NZ for $370 USD (double what it sells in US), and it is not in stock.

Tomei so far I found on rallysportdirect.com for $180, the cheapest option I believe is to get it shipped via Youshop as shipping price from rallysportdirect is a bit silly (~$85 USD).

Tomei vs Perrin, here what I found:

Tomei mentions reinforcement (but not what kind) vs Perrin stainless steel wire.
Tomei comes with metal connectors of correct type (for JDM without PVC sensor) vs Perrin plastic and one incorrect (I will have to source proper connector?).
Tomei comes with a reducer adapter vs Perrin is direct fit.
Tomei from rallysportdirect has 12 weeks lead time vs Perrin in stock.

I am tending towards Tomei since I am not in a hurry. What are the experiences with rallysportdirect?

Unfortunately there is nothing available in NZ for reasonable prices (as in not double of what it sells in US).
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Old 07-03-2017, 08:37 PM   #10
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Quote:
Originally Posted by SergeiF View Post
Unfortunately there is nothing available in NZ for reasonable prices (as in not double of what it sells in US).
Have you looked at the AVO inlets?.. they are of good quality reinforced construction and should be readily available near you.
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Old 07-04-2017, 07:58 PM   #11
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Quote:
Originally Posted by fastnoypi View Post
Have you looked at the AVO inlets?.. they are of good quality reinforced construction and should be readily available near you.
Never heard of them, after little bit of googling, they are not available here (shipping from Australia to NZ is more expensive than from USA to NZ), and they are more expensive than Perrin ($270US?).
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Old 07-05-2017, 01:13 AM   #12
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AVO is good stuff... but you are seriously overthinking this - get the Tomei and call it a day.

All this comparison of which has the most reinforcement and all that is really not that important. I use a 2-ply Samco with a rusty metal ring on the side being fed by the filter... works great, probably added nothing in terms of output, but it helps me change the turbo faster.

RSD is a great site - buy the Tomei, done deal.
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Old 07-05-2017, 09:59 AM   #13
fastnoypi
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Quote:
Originally Posted by SergeiF View Post
Never heard of them, after little bit of googling, they are not available here (shipping from Australia to NZ is more expensive than from USA to NZ), and they are more expensive than Perrin ($270US?).
on http://www.avoturboworld.com/ AU region, they are 297 including 10%GST. which is about 225 USD... You'll have to simulate a cart to see what the shipping would be.
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Old 07-05-2017, 05:51 PM   #14
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Quote:
Originally Posted by fastnoypi View Post
Have you looked at the AVO inlets?.. they are of good quality reinforced construction and should be readily available near you.


Yea i think AVO is based in ausie.

Op you will not have any collapsing issue w/ a godspeed inlet on higher than stock power levels let alone stock level. There is fiber reinforcement in between the various silicone levels.

Im not saying its the best inlet out there, im sure the pricier ones are made of better material and are more durable and these manufacturers have put in more hours testing there product before releasing it for public consumption, but rest assured the godspeed one will suffice!

I bought a used one and ran high boost levels with a 16g. It is an upgrade over most any stock turbo btw. Its even easier to install than most any other inlet. Just slip it right under the intake manifold (that's for GD'd not sure about the GR's).
I then went on to sell that same inlet to a buddy of mine who proceeded to run it on a 20g , tuned w/ no 'collapsing' issues.
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