Godspeed intake manifold and emissions.

[NightWalker86]

Hey guys,

Okay, so my stock intake manifold is apparently ruined. The large aluminum coolant pipe that appears to be pressed into the manifold itself is completely rusted out, and has multiple holes into which cause pretty bad leaks. I'm kind of ticked off because it looks like you cannot just buy a replacement pipe and have it installed in the manifold. So, long story short, I am thinking about taking this opportunity to upgrade the manifold to a Godspeed/Xcessive clone.

The car is a 1996 and I already know about the modifications needed to make it fit perfectly, my main concern though is in regards to emissions.Will I be able to pass an OBD2 test with this manifold? I already have an EGR delete installed and that has NOT tripped any codes. How about this manifold though?

It looks like it uses a LOT less vacuum hoses from what I can tell, and I am fine with that since it's so messy anyway, but are any of them needed for emissions? Any insight is much appreciated! Thanks!

PS: Here's a link to the manifold (this is the Xcessive version) in question: http://www.buyimportperformance.com/Xce ... 4de-ci.htm

[2_Liter_Turbo]

I wouldn't touch a godspeed intake manifold personally, it's just a low quality chinese copy of another companies R&D. You can find used clean OEM intake manifolds for cheap all the time. If you really want to get a trick manifold (I hope you are at least turbo, or you'd be wasting your time/money anyways), then save up the cash for the part that was actually engineered rather than copied. I've made that mistake in the past, and it sucked, only reason why I'm saying anything. Trying to save some headache for ya, lol.

[NightWalker86]

It's hard to justify buying another stock used intake for around $100 when I can buy the Godspeed one for $240 shipped. The stocker is busted so it would just be easier (and cheaper) in the long run to replace it with an aftermarket unit. This is the same reason I upgraded my front brakes to a Z32 setup when the rotors and pads were warped.

I'm not concerned at all with a power increase at this point, I already know there more than likely wont be any. It's a matter of upgrading a stock piece that is broken to an aftermarket one that has room to grow. Thanks for the reply though, any thoughts on the emissions side of things?

[Razi]

The Godspeed manifold is a mess. You're going to spend a lot of time trying to get that piece of crap to fit and work properly.
If you don't have your EGR hooked up, I don't see how you can pass emissions. You won't even pass visual.

Check superDorifto's build thread and all the work he had to do to the manifold:
Page 3-4
superdorifto-s-kouki-ka-der-build-t530966-60.html

[Lobo240sx]

GodSpeed = Trash. They have a lot of fitment problems from manifolds to turbos. Save up and get a better quality bolt-on product.

[SX APPEAL]

EDIT: Damnit Razi you beat me to it!

Just don't do it, buy the $100 used stock manifold that fits and works EXACTLY LIKE ITS SUPPOSED TO and be done with it.

I didn't post pics yet, but yeah all of the injector bosses were undersized...I bought a straight carbide end mill for my dremel and spent some quality time with it on Saturday.

I'll just summarize for anyone whos interested:

Xcessive Manifold ~$460 plus $90 bucks for the velocity stack insert.

Godspeed copy I paid $250 shipped
+ $98 bucks to true all the flanges
+ $90 bucks to add a flange for IACV (granted the xcessive would have needed this too, but still)
+ $90 bucks for the same Velocity stack insert from xcessive

Then you add my time

2 hours knocking off all of the casting flash
2 hours massaging the injector bosses to get them to fit
3 trips to the hardware store so far (for spacers and what not)
2 hours fiddling with the fuel rail trying to get the o-rings to seat right..

Not saying that I wouldn't have had the same issue with the Xcessive unit, but I am def tired of working with this peice of crap - and if you notice, none of that time is spent proting or gasket matching / polishing or painting.

By the time its all said and done, this manifold is gonna eat 20-30 hours of time and run over $550 bucks.

That pretty much sums up your future experiences with a Godspeed or Xcessive manifold.

Read the original thread, especially pages 3 and 4 for all the gory details, or send superDorifto a PM and I'm sure he'll fill you in.

SuperDorifto's Overbuilt Kouki KA-T Build

On the emissions front, Xcessive style manifolds don't have any, so to add the IACV (which you WILL want) and such back on to it will be more cost and machine work, not to mention getting your stock fuel rail to fit properly (both of which he^ talks about in his thread) and then you find out you have to run all custom heater hoses because none of those Xcessive style manifolds have provisions for them. All told, you're going to be AT LEAST $600 into that stupid manifold in parts and labor before you're done with it, and your car will still run like stock with no extra power, might sound a little better lol.

Bottom line: DON'T DO IT!

[2_Liter_Turbo]

It's hard to justify buying another stock used intake for around $100 when I can buy the Godspeed one for $240 shipped. The stocker is busted so it would just be easier (and cheaper) in the long run to replace it with an aftermarket unit. This is the same reason I upgraded my front brakes to a Z32 setup when the rotors and pads were warped.

I'm not concerned at all with a power increase at this point, I already know there more than likely wont be any. It's a matter of upgrading a stock piece that is broken to an aftermarket one that has room to grow. Thanks for the reply though, any thoughts on the emissions side of things?

I'll sell you the section you need for cheap, lol. I have a few S14 KA manifolds laying around. And spending $240 on something that doesn't fit right or performs poorly is not better than replacing it with an OEM part. As for emissions, what are the standard in your area? Do you have visual inspections like california? If so, the manifold will make you fail automatically. In Portland, OR you just have a tail pipe test and a plug in scanner to your OBD-II port. If everything bolts on and can work like it supposed to, you can get it to pass. The majority of the state you have no emissions though, lol

[240hatchsx]

Sorry to thread jack but I need a upper part to a S14 intake manifold if pm me there 2_liter

[NightWalker86]

2 Liter Turbo, what's cheap? PM please.

I have been looking at my stock manifold and it appears like I MIGHT be able to cut off enough of the aluminum pipe to still allow the radiator hose to connect. From there I can reroute the heater hoses and cap off the coolant hoses at the throttle body. That should, in theory, "fix" this situation with the stocker mani. Still a lot of work, but might be feasible.

Ideally, if I can make my stocker work for now I can purchase the Godspeed mani and do the necessary modifications to it while it's OFF the car. Taking into account I will have already done the heater hose reroute and coolant line cap at the throttle body just to make my stock mani work again. I'll have a closer look at the stock manifold tonight to see if I can maybe save it. Updates will follow either way, thanks.

[OM3GA]

I wouldn't touch the Godspeed manifold since they stole the Xcessive design entirely.

I had the Xcessive manifold on my S13 KA and loved it. I was not worried about emissions however. I would say that it would not pass emissions with this manifold depending on the extent of your local inspection. Not sure if you guys have visual inspections along with the actual test but the majority of the vacuum lines on an OBD2 setup are required for the emissions equipment to function properly.

You have deleted the EGR already? It passed that way?

[2_Liter_Turbo]

2 Liter Turbo, what's cheap? PM please.

PM'd

Sorry to thread jack but I need a upper part to a S14 intake manifold if pm me there 2_liter

Looks like I only have one (already sold another one). If the OP doesn't want it, I'll PM you.

[240hatchsx]

Hey omega did you run the Q45 TB on this and if so where did you get that intake setup??? Would really like to know so I can do mine the same way.

?

2_Liter that's fine by me that you did offer to the OP first

[NightWalker86]

2 Liter Turbo, what's cheap? PM please.

PM'd

Sorry to thread jack but I need a upper part to a S14 intake manifold if pm me there 2_liter

Looks like I only have one (already sold another one). If the OP doesn't want it, I'll PM you.

PM'd you back.

[OM3GA]

Hey omega did you run the Q45 TB on this and if so where did you get that intake setup??? Would really like to know so I can do mine the same way.

?

2_Liter that's fine by me that you did offer to the OP first

I had the stock TB and i made the intake setup. I can get you all the parts but you will have to cut the loom on the stock harness and remove the MAF wires so you can run the MAF on the intake side of the car.

Let me know if you need help.

[Mikey's KA]

I'm planning on boosting my KA eventually. I was looking to replace the fuel rail, intake manifold etc. I noticed up above you guys had mentioned having to do custom hoses for an excessive manifold. Would you have to do anything else custom? Or does everything else just fit?
Thanks.