I thought i would let everyone know how i feel about this intake manifold.

Truly a really nice piece, i decided to go with the 4.5L. I don't have a huge turbo and figured this would give me he best over all powerband and still make power.

The only things that have changed on my car since the previous dyno:

Victor X -> Skunk2 4.5L Ultra
Stock Throttle body -> Skunk2 90mm
2.5" Intercooler piping -> 3" Intercooler piping

I am on a "new motor" but its still the same compression and everything else is the same.

Setup is:

Sleeved 84mm GSR
10.5:1 Wiseco Hd Pistons
Manley Turbo Tuff Rods.
Supertech Valve springs/Retainers
Ferrea 6000 IN/EX valves
Ferrea Keepers
B16 head
GSC Power-Division Turbo Cams

4.5L Skunk2 Ultra Series
Skunk2 90mm TB
FIC 2150's
E100 fuel
Stock sumped fuel tank
Twin 255's inline

ETS Forward Facing Turbo manifold
ETS 3" Intercooler piping
ETS 4x12x24" intercooler
Precision 6262, T3 .82A/R


Here is the closest i could get the boost:




Here is the final result on the car, almost 1psi more on the Skunk2:



One thing i will mention at 8600rpm last time it broke up, as i was on STOCK Ignition, now i have the T1 M&W ignition. So the 701whp dynosheet has a "miss" right at 8600rpm.


Now here is what i think:

What annoyed me the most was the throttle bracket the intake came with would not mount anywhere that i could see. So i made my own and had to drill and tap the intake for it. Maybe the intake was meant to be used with the GSR cable and bracket? Not sure just voicing my thoughts there.


If you look at the first dyno sheet, you will see a 30whp "Peak" difference vs the Victorx. A difference is a difference, but overall powerband was DAMN near identical. It is slightly less boost now than it was and about a half a point richer on AFR's.

2nd dyno sheet: Is a solid 1psi more almost all over and i would say we were pushing the turbo here more than before.


It made good power, i won't knock it down for that.


For the money you have to spend and the loss in driveability in the stock TB vs the 90mm TB, Do i think it was worth the extra $1000. NO.


Again not knocking the intake, it truly is badass and works. It is better than the VictorX, but not by much.

This intake might shine much better with a bigger turbo than a 6262 but i will never know on my car.

I would be willing to test the 5.5L on this, but don't plan on spending the money on the spacer. If someone wants to send it to me to test i will go right ahead lol.

Take with that i said here with a grain of salt. I was trying to be "Neutral" with this test.

Thanks,

Myles

 

Yea it looks like it does have some decent gains but that much money for only 40hp doesn't really seem worth it. Have you tried the 3.5l plenum at all? I wonder if the smaller plenum volume would shift the power curve at all. I think the 5.5 would be overkill for you and would probably be detrimental to your current setup

Honestly if it were me I'd stick with the Victor X and put the massive difference in cost to use somewhere else on the car.. or pay a few strippers car notes lol

I would have expected more, especially on your car, unless you're simply out of turbo for that manifold and any real, consistent power/torque gains.

And the way Skunk2 and their various distributors hyped up this manifold I would feel the same way you do

 

Also, how bad was the drive-ability with the 90mm TB? Do you think your clutch and flyhweel setup had anything to do with it since the reduced rotating mass would make the low end really jerky with a large throttle body

 

The gains are hard to really read because well this thing is up on boost and has a better ignition...

I did not try the 3.5L. i could imagine changing this thing on the car would be a ******* pain in the *** lol.

Sadly i can't go back to the Victor X and stock TB as i sold them.

I feel like this car/turbo really doesn't have much more in it if any at all.

To go from the 73xwhp to the 742whp pull it was 1 deg of timing and 1% duty of boost. Which was a 12whp/20fbtq increase and my eyes, thats not a huge gain in power. So we actually backed down the timing 1 degree to where it was..

This car and combo makes VERY good power on this turbo from what i have seen.

 

It sucks lol.

The 90mm is so touchy on throttle its just really hard to drive. Its manageable but stock tb was much nicer to say the least.

 

And I've seen a lot of 6262 dyno graphs and they are all lazy as ****, making no midrange power, just top end power... but your build seems to defy all the others... you have a very broad powerband (for your given turbo size) that seems to put all other 6262 setups to shame

I mean by 6000 you're making almost 500hp. some of the 6262 dyno graphs I've seen don't make that much power till almost redline

how do you do it? How do you make that 6262 one of the most responsive 6262s I've ever seen lol?

 

i feel like this is a lazy car compared to the Evo's we have with this turbo on it but those are hard to compare to a Honda as far as spool, almost all of them have bigger motors. lol

The whole combo on the car just works. We could probably mess around with the quick spool **** in the s300 but this is a true street car and it spooling how it does truly helps it with traction.

 

Your issue with the drivability is because the TB will need another return spring, the tb return spring itself is not strong enough to actually close the tb back to normal.

I've experience no issues what so ever, after adding the spring, as I've been dailying the car for the last few days while tuning it.

 

Yea I had a 90mm mustang TB on my old motor and the single spring wasn't enough and it made the throttle very snappy. added a second, stiffer spring and throttle control was greatly improved.

It's mainly due to the surface area of the 90mm butterfly and the air pressing against it, that can actually prevent/severely delay the full closure of the butterfly and makes the car feel very jerky, almost like it's stumbling

 

i think the gsc t1 cams are responsible for his 6262 response characteristics

 

I used a GSR Stock TB bracket, which mounts fine. Use a GSR length Throttle cable. With some innovation from my Father in law, we came up with this.. Drilling right though, it comes out the back and doesn't interfere with anything, got a set of return springs from autozone and went to ace to get a Nylon sleeve to keep it from moving.

The stock spring that comes with the TB, is not enough.

 

Mannn myles you're a pretty big deal on here he now

 

My 6266 spools the same as Myles 6262. Love it ! I picked up an ultra my self but the smaller 3.5 plenum. I will be running my 72mm STR throttle body and making an adapter plate.

 

They say the 6266 does spool faster because it has a lighter turbine wheel or re-designed or something im not sure but thats what they say.

 

Even at 700+whp not much of a gain. I'm sure someone will say its for race cars only lol

 

I realy dig the powercurve.. Cant say that enough.. Tourqe usualy dips drasticly with rpm when pushing the turbo near it´s limits. I wish I had this car so I could do some back to back testing myself on intakemanifolds, cams ans throttle bodies. Especialy pro 1 cams and Golden Eagle intake mani.

I don´t understand the concept of a larger throttle body than the chargepipeing. Is there a point with lower velocity charge air entering the plenum?
Evan if that is the theory I doubt that the velocity would change that much with a larger throttlebody.

 

The reason i went with this throttle body was because the intake is flanged for a 90mm. I guess if i really wanted to i could have re-drilled and tapped it for a smaller throttle body but it is what it is now.

I might actually change it to a 75mm later down the road. I truly don't think it is a restriction at the power level im at right now.


I also wish i could do testing lol. I have a dyno at my disposal, but it takes time and money to do testing and unless people are giving me stuff for free... I don't see it happening lol.

 

Pretty much intake manifolds arent going to make your car faster, imo save your money and buy a bigger turbo instead lol

 

I only want something that is a 62mm. So 6266 and the HTA3586 are my 2 that i would upgrade to.

If i go bigger than that i get kicked out of the FIS class here.

 

LOL so your saying that a stock intake manifold will make the same power as any aftermarket manifold?

 

I hope he doesn't mean that!!! LOL

 

No he's simply saying that once you're at that high of a power level that changing an intake manifold from one to another won't matter much (no one I know would use stock components at that power level) So once you make 7XXhp on a Victor X that swapping to another manifold won't show the gains it would on a lower power setup where there's more room for improvement... Myles' car is pretty much at the limit on every current component. He's definitely at the limits of the 6262 and that is solely responsible for much of the power being made... so to make more power he needs a bigger turbo

I'd be curious to put a BMC Race Billet Pro against his Victor X numbers/graphs and then the S2Ultra graphs... A lot of careful planning and R&D went into the Billet Pro and as far as I know, anyone that ran one saw a great improvement

 

Send me one, ill put it to test :p

 

If I could afford one I'd be using it...duh lol

 

No thats not what i said, I didnt say it wouldn't make more power, What I said was for $1000 price tag on the manifold it probably wont make his car any faster then the 10.12@151mph he has allready ran on the victor x, When you are allready running 150mph, 20-30hp isnt going to gain you much if anything at al lcompared to spening the money on a turbo upgrade or Suspension for the money.