Greddy vs avo stage 1 Pros and cons of each

[AllDayJonRay]

Originally Posted by midnight23

I run it without the Bov. No issues or complaints here.

Yet... Every time you go from full boost to closed throttle the pressure build up in your charge pipes is putting extra strain on the bearings of your turbocharger. Eventually that will begin to do damage.

[SliverBrz]

Guys is a clutch absolutely necessary?

[SmsAlSuwaidi]

Originally Posted by SliverBrz

Guys is a clutch absolutely necessary?

No,

Ps: and ill get you the info soon


Sent from my IBrick

[SliverBrz]

Originally Posted by SmsAlSuwaidi

No,

Ps: and ill get you the info soon


Sent from my IBrick

What about a catch can?

[SmsAlSuwaidi]

Originally Posted by SliverBrz

What about a catch can?

A nice addition, not a must but i prefer it and few do too


Sent from my IBrick

[Sellout]

Originally Posted by AllDayJonRay

Yet... Every time you go from full boost to closed throttle the pressure build up in your charge pipes is putting extra strain on the bearings of your turbocharger. Eventually that will begin to do damage.

Eventually that MIGHT begin to do damage. Off-throttle surge isn't even a fraction of the problem that surge under load can be.

[AllDayJonRay]

Originally Posted by Sellout

Eventually that MIGHT begin to do damage. Off-throttle surge isn't even a fraction of the problem that surge under load can be.

It's not as devastating, but it happens EVERY time you go from boost to closed throttle. It's not might, it definitely will start to do damage. That's why all manufacturers starting started applying bpv's on factory turbocharged vehicles: for longevity concerns.

[Boss Paco]

Originally Posted by midnight23

I run it without the Bov. No issues or complaints here.

Really? Get one. Plus they sound cool!

I'm sure a 250ish car won't need a clutch unless you're a terrible driver or beat it's ass all day and night long. I'm upgrading for flex fuel and for the hopeful gains associated with E. And also have plans for a catch can setup. Especially for E85.

Thing is, get a kit and then round it out to your liking. If you get everything installed at once, it will be less cost. But I've been supremely happy with car at 8-10psi on crappy 91 with stock everything but an Invidia full cat less exhaust wideband and multi gauge. You won't regret it!

[Pete156]

Originally Posted by mmsracing

Back on topic, AVO versus Greddy, I personally like both. My opinion, If I was going to be happy with 240 to 260 hp on stock motor internals, then I would go with AVO Kit stage 1 or 3 (stage 3 provides 290hp to 300hp but pushing the edge for stock internals IMO at 12:1 compression). Smooth, reliable, track proven. I prefer this kit for track purposes due to mechanical oil pump and scavenge reservoir. Solid design, better cooling IMO on low mounted turbo.

But. Turbo on the bottom on a lowered car for daily driving, could be and issue around speed bumps.

If I wanted a nice looking, show off my engine bay turbo kit and wanted to DD and car shows, then I would do the Greddy.

I would buy the AVO 1.5 kit I have on my BRZ again in a heartbeat. It's my DD and runs like a rabbit. 34mpg avg./260whp/8.5psi/stock clutch. I have to give it up to @DriftOffice for their installation and tune. I consider Bob and Bill some of the best import tuners on the west coast (seriously).
I am thinking of picking up a used 86 for one of my daughters and putting another AVO kit on. It is THAT good! Just sayin'!
Don't understand what exactly you mean by "turbo on the bottom of a lowered car for daily driving, could be an issue around speed bumps" We run hard winding roads with huge potholes from sea level to 7000ft in the Cascades. Hard! The turbo would be the last thing hitting the roadway. Absolutely no cooling issues with stock cooling system. Duplicate that with a front mounted turbo. I think NOT.

[SliverBrz]

So far, it seems like if you didn't get screwed on the hot parts with leaks , the avo seems to have the least amount of problems once running.

[midnight23]

Originally Posted by Boss Paco

Really? Get one. Plus they sound cool!

No need for it, I could put that money into a flex fuel kit! Plus at full boost release it sounds like one of the greddy style bovs anyways.

[cdrazic93]

Originally Posted by SliverBrz

So far, it seems like if you didn't get screwed on the hot parts with leaks , the avo seems to have the least amount of problems once running.

Yes, that seems to be the general consensus. AVO; low mount, small turbo, fits most if not all exhaust, reliable, competitively priced in the way of turbo and SC kits for the 86, no heat issues, the list goes on!

I think the main problem is that not many people have bought the Greddy kit yet to give an accurate review on them. I know several people who have ran into issues with their AVO kits. BUT on the other hand there are countless numbers of people who haven't run into those issues.

At this point, the kit that provides with the largest customer base to "pull" reviews/experiences from, as well as the standard will this fit that, how reliable is the turbo, will this blow up my motor, do I have to make any safety modifications, those kinds of questions.

The kit that can answer those questions to your liking and still draw from the largest pool of ownership experience for the car is something to be had, and IMHO is the best, AVO.

[Boss Paco]

Originally Posted by midnight23

No need for it, I could put that money into a flex fuel kit! Plus at full boost release it sounds like one of the greddy style bovs anyways.

You got it. Ain't nuthin fo a balla, baby!

Get both. When my kit was going through shakedown we had too heavy of a spring and it sounded like the old Supras from the Best Motoring videos running the HKS SS BOV.

You really should relieve the pressure. Just imagine when you start putting more boost to it. Not good for your turbo. Plus you don't want the troubles that come with a grenades turbo.

[Sellout]

Originally Posted by AllDayJonRay

It's not as devastating, but it happens EVERY time you go from boost to closed throttle. It's not might, it definitely will start to do damage. That's why all manufacturers starting started applying bpv's on factory turbocharged vehicles: for longevity concerns.

And yet, Greddy turbo kits for non-turbo cars always ignore the bov. Some people add one, some don't. But we don't hear about failed turbos with those kits. Greddy has been doing this for a long time. We would know by now if adding a bpv to one of Greddy's turbo kits was absolutely necessary to prevent the turbo dying a horrible death.

Some off-throttle surge really isn't the problem the magazines make it out to be. They (the magazines) need to sell advertising. If they told you that you really didn't need that piece of shit HKS valve, then they lose out on big HKS money.

Manufacturers spec bypass valves because they MIGHT prevent failures, they're not guaranteed to. They've got millions (hundreds of millions?) invested in making a product that needs to succeed and is GUARANTEED to have some problems resulting in warranty repairs. You want to limit warranty repair needs if you can do so cheaply, and a bpv is cheap. Plus they know that the magazines are out there telling everyone who will listen that if they don't have a bpv, their turbo is going to blow up, potentially effecting how many people buy the product.