S13 SR20DET Intake Manifold, Greddy? Or ISIS Easy choice? I think not

[OM3GA]

Youd think by just reading the title omg no brainer right go with the better brand if you can afford it!? Its not like that though, Im wondering which is better fitting it seems you have to do a little bit to get the greddy one to work correctly to i'm wondering if the ISIS one is the same way. Here are the things ive heard about each one.

S13 Greddy:Change throttle body pulley to S14 oneCut part of the Sheath on the throttle cableGet a swivel adapter for the FPR

S13 ISIS:Dremel part of the fuel rail so the bolt hole lines up with the manifoldGet shorter Throttle body bolts.

It seems to me like the ISIS one has less modifications to make it work? Or are those just extra things you have to do besides what is normally necessary for the Real Greddy manifold?

Im not concerned about the cost difference as much as i am the fitment and quality.

[TheRealNap0le0n]

the greddy has easier issues to deal with as opposed to the ISIS one... just basing it on what you listed tho

[Bumnah]

What would you buy a Sony? or Sorny?

[BrianHarte]

GReddy

Sony is better than Sorny.

[TroubleBound]

GReddy

Sony is better than Sorny.

[Steady_One_S13]

GReddy

[n240sxfnatic]

the greddy has easier issues to deal with as opposed to the ISIS one... just basing it on what you listed tho

You are dumb. I would buy isis and never look back. ken from enjuku worked with the people who made the manifold and sent it back several times till they got it right. I would buy isis over greddy anyday.

[OM3GA]

Hmm, I think i will go with the greddy one i want high quality stuff on my car (besides the intercooler core which will most likely get destroyed) I just need to figure out how to trim the Sheath on the throttle cable and also how much and where lol idk what exactly to do for that so im scared

ISIS is probably the best Greddy replica out there, I was going to go with a KU Engineering one but ive seen a similar one in person and the quality was horrible (it wasnt the actual KU one though) Im just worried like is the KU one going to be good quality? or should i not risk it and go with the tested proven quality Greddy? The only thing is that Greddy does NOT make a new coldpipe for their new manifold design but i guess a custom one would not be bad to fab up.

[Bumnah]

courtesy nissan sells a cold pipe for a s13 sr's using greddy intake manifolds. $25.

[crash n burn]

very simple answer. buddy JUST bought a FReddy manifold..and he fixed the casting problems, etc etc and broke down the costs. same rules could be applied to the ISIS manifold but i've seen the quality, and its not half as bad as the E-Gay one he picked up. and Matt isn't exactly the one to skimp out on his builds..he just did my wiring harness, i'd trust his work any day. the thermal coating will end up taking care of the ugly casting marks..its something to think about for sure

quoted from his thread on CN

I bought this Freddy manifold with the idea that my intercooler piping would be much less complex than with the stock intake manifold, then bought a dremel tool at Harbor Freight and polished the runners and port matched it as well, the next step is to have the outside surface thermal barrier coated which has an advertised internal temp reduction of 15%, and added to the thermal intake manifold I have will help a bit, in the end this will yield a better finished product than the Greddy is out of the box as the Greddy for half the price. A Greddy manifold runs upward of $579, my manifold was $180 shipped, the dremel tool was $40.00 then the attachments for the dremel $20, and finally the thermal coating will be $100, making total cost tied up in the manifold $340. That means I saved $239 compared to buying the Greddy manifold and doing the same machine work and thermal coating. Everyone can say what they want when it comes to knock offs, but the two different parts do the exact same thing, and you won't sway me to pay more money for one that has a brand name on it, this isn't high school and I'm not gonna cry because I don't get to wear Abercrombie everyday.^ugly castings, but the dremel took care of it, haven't got any good pics yet of the finished product, my camera was being geh when I took this one, whats up with that pink? ugh. Either way you can tell the surface is much smoother than it came. I ended up polishing the runners from the flange back to the plenum.the pic below shows that the brake line from the master cylinder gets kinda close to the manifold, taking the manifold on and off isn't fun, but come on, how many times will I take it off after the car is running?

[OM3GA]

courtesy nissan sells a cold pipe for a s13 sr's using greddy intake manifolds. $25.

I know i saw that, However I am going to be getting the new style Greddy manifold which actually has longer runners and that cold pipe wont work anymore..

very simple answer. buddy JUST bought a FReddy manifold..and he fixed the casting problems, etc etc and broke down the costs. same rules could be applied to the ISIS manifold but i've seen the quality, and its not half as bad as the E-Gay one he picked up. and Matt isn't exactly the one to skimp out on his builds..he just did my wiring harness, i'd trust his work any day. the thermal coating will end up taking care of the ugly casting marks..its something to think about for sure

quoted from his thread on CN

I bought this Freddy manifold with the idea that my intercooler piping would be much less complex than with the stock intake manifold, then bought a dremel tool at Harbor Freight and polished the runners and port matched it as well, the next step is to have the outside surface thermal barrier coated which has an advertised internal temp reduction of 15%, and added to the thermal intake manifold I have will help a bit, in the end this will yield a better finished product than the Greddy is out of the box as the Greddy for half the price. A Greddy manifold runs upward of $579, my manifold was $180 shipped, the dremel tool was $40.00 then the attachments for the dremel $20, and finally the thermal coating will be $100, making total cost tied up in the manifold $340. That means I saved $239 compared to buying the Greddy manifold and doing the same machine work and thermal coating. Everyone can say what they want when it comes to knock offs, but the two different parts do the exact same thing, and you won't sway me to pay more money for one that has a brand name on it, this isn't high school and I'm not gonna cry because I don't get to wear Abercrombie everyday.

This all seems very very logical, however i dont have the time unfortunately right now but if i did that is definitely something i would do. I'm still trying to figure out what exactly you have to do to the Throttle cable to get it to work properly

[tunermt]

It took me a long time to finally find a quality Intake Manifold for the SR! There is now another option besides Greddy and Freddy for S13, s14, s15 and sr20ve (RWD). Got the best price from these guys for the last one i bought.
https://brewedmotors.com/velocity-eleme ... e-manifold

[justinrps13]

I have a isis freddy intake and a buddy of mine shelled out the full 5 or 600 or whatever it was for the greddy one, side by side other than the finish and the greddy emblem they are exactly identical welds look the same, porting is the exact same size down to .010 the only difference I noticed was as posted the fuel rail didn't want to bolt up exactly but nothing a little bending a tab with some plyers wont fix