nismo intake or GReddy intake

[cortexx]

Faced with the possibility or replacing the intake , would you use the GReddy or pay the extra for the Nismo one ?

I notice the GReddy one is in 2 parts , does this facilitate the labourious task of removal/remounting it ? The Nismo also seem sleeker too .

Ill be using 700cc injectors , gt2860-5 turbos , GReddy intercooler , trust/greddy full exhaust with cat , tomei dumps ,HKS filters, power FC

my aim is to have a trackable car that is also well manered for the street..

thoughts ?

[Velders]

Personally, unless I wanted like 900hp or more I would stick with stock or go Nismo. I would say the Nismo or stock would be a better match for those turbos, especially on a street car.

[NerdJuice]

I just installed a greddy one in my car, and installation would be next to impossible if it wasn't in two pieces. Assuming the engine is still in the car.

[Super_Dude]

At the power levels your looking at there is better places to spend your money. If you want the bling factor go for it but otherwise your money is better spent elsewhere.

[cortexx]

SO where would you spend the cash ?

At the power levels your looking at there is better places to spend your money. If you want the bling factor go for it but otherwise your money is better spent elsewhere.

[Super_Dude]

I would take the 1500 dollars you would spend on the nismo and get a carbon driveshaft or even an aluminum one.

The biggest restriction in your build isn't the intake either. Its the 70mm reducer into the cat and the cat itself. I would get a shop to modify your exhaust and downpipe so there is no step down in the exhaust. 90mm the whole way.

Just like a chain only being as strong as its weakest link, an exhaust only flows as much as its smallest section.

So if it was me (and it once was) I would get a carbon driveshaft and a bigger downpipe/exhaust.

[BenC]

Poncams? Granted they are a bit of a pain to shim

[mikes911]

If you do decide to go with the Greddy intake manifold I have a new one that has been mounted but not driven. Local too.

Mike

[cortexx]

Is changing the drive shaft really a worthwhile investment at this stage ? also I have the greddy full downpipe , exhaust and it is a twin system to the back. I cant remove the cat because the cops around here are very hot on exhaust systems , especially with all the civics and talons that drive like lunatics with their tin can mufflers . They issue ministry vehicle inspection tickets like halloween candy. Plus it has to pass it's emissions every 2 years.

I would take the 1500 dollars you would spend on the nismo and get a carbon driveshaft or even an aluminum one.

The biggest restriction in your build isn't the intake either. Its the 70mm reducer into the cat and the cat itself. I would get a shop to modify your exhaust and downpipe so there is no step down in the exhaust. 90mm the whole way.

Just like a chain only being as strong as its weakest link, an exhaust only flows as much as its smallest section.

So if it was me (and it once was) I would get a carbon driveshaft and a bigger downpipe/exhaust.

[cobrAA]

Is changing the drive shaft really a worthwhile investment at this stage ? also I have the greddy full downpipe , exhaust and it is a twin system to the back. I cant remove the cat because the cops around here are very hot on exhaust systems , especially with all the civics and talons that drive like lunatics with their tin can mufflers . They issue ministry vehicle inspection tickets like halloween candy. Plus it has to pass it's emissions every 2 years.

I'm also curious to see the difference between 70 and 90mm. I'm not sure the gain would be that huge for any 500whp gtr.

I highly doubt I will see any difference ( well maybe 5-10whp at max) between my ex 3' test pipe and my new 2.5' OEM decat ( it's gutted but I had a pipe welded so it's straight pipe)

[Super_Dude]

Poncams? Granted they are a bit of a pain to shim

I didn't notice he didn't have cams. I assumed if he was at the point of upgrading the intake manifold he would have cams. I would defiantly do cams before any of these upgrades.

Is changing the drive shaft really a worthwhile investment at this stage ? also I have the greddy full downpipe , exhaust and it is a twin system to the back. I cant remove the cat because the cops around here are very hot on exhaust systems , especially with all the civics and talons that drive like lunatics with their tin can mufflers . They issue ministry vehicle inspection tickets like halloween candy. Plus it has to pass it's emissions every 2 years.

It's more of a worthwhile investment than the manifold. The nismo manifold wont make any noticable gains in power or response. The greddy is for a high hp car and you would loose a bit below 5000rpm and slow spool. If your willing to give this up for a little extra power up top then go that route. I would upgrade cams before any of these mods.

If the exhaust doesn't taper down at all then you are set. If you can't remove the cats then I would get a high flow one or two high flow ones if you system is fully twined.

I'm also curious to see the difference between 70 and 90mm. I'm not sure the gain would be that huge for any 500whp gtr.

I highly doubt I will see any difference ( well maybe 5-10whp at max) between my ex 3' test pipe and my new 2.5' OEM decat ( it's gutted but I had a pipe welded so it's straight pipe)

It won't make a huge difference on a 500whp -5 car. If your shooting for 550+whp out of -5's it will be very tricky threw a 70mm pipe.

A cookie cuter -5 car will usually add up to around 500-530whp. Good power by any standards

If you want a 550+whp, -5, rb26 car you will need headwork, bigger cams (270 10.8), big exhaust (90mm.)

[Marke]

Sounds like your car will already overwelm an OE clutch. If you want to track your car, I would get an oil cooler and a better clutch, if you haven't done so already.

Other bonus to a Nismo plenum is it dog legs the sixth velocity stack to equalize air flow, so no more leaning out the sixth. The velocity stacks are longer than OE as well as being ported and polished. But by far its best feature is the cool Nismo badge. I should know, I have one.

[cortexx]

Car came with a Nismo clutch and i have an HKS oil cooler relocation kit on the way from Japan , i just didnt mention them because they dont really influence the amount of power the engine will produce ..

I was considering the intake because i had read negative comments about the distribution properties of the stock unit. I heard the Nismo one corrects this.

Sounds like your car will already overwelm an OE clutch. If you want to track your car, I would get an oil cooler and a better clutch, if you haven't done so already.

Other bonus to a Nismo plenum is it dog legs the sixth velocity stack to equalize air flow, so no more leaning out the sixth. The velocity stacks are longer than OE as well as being ported and polished. But by far its best feature is the cool Nismo badge. I should know, I have one.

[Super_Dude]

Tuning will also correct this. #6 gets a little more air than the other cylinders and just needs a little extra fuel. Problem solved.

[cortexx]

Well taking everyones advice into consideration i think ill put the cash towards a set of Bride lowmax Gias seats and some harnesses . The stock Jap-ass seats are too small for my 6'7" 265lb frame. The sparcos i bought were too large , the doors wouldnt shut properly after they were mounted lol.

What i would like is a kit to replace oil and water lines when i replace the turbos , i don't want to use the old lines when i do the work. Any advice on this ? braided steel would seem like a good idea.

Also are there any guides to doing a complete vac/junk reduction ? there is so much **** hanging off and around the engine it looks like a Heath Robinson invention.