HolyShiznit

iTrader: (11)

After a long process it's finally done. I purchased a Huron Speed V1 kit late last year as part of their blow out sale they offered. The package Jon offered me included a Precision 7475. When the car initially was put on the dyno with the LS1 the boost spiked and immediately went from 6psi to 19psi in less than a second. This resulted in bent rod. So in went the L33 and we replaced the 44mm wastegate with a PTE 60mm and changed up the wastegate entry point.

L33 5.3 (stock ring gap)
Stock LS1 intake/throttle body
317 Heads w/Dual Springs/Pushrods
LS9 Gaskets
"China" Head Studs
Huron Speed Hotside/Cold Side w/custom intake and "Muffler Downpipe"
Tick Performance Stage 2 Turbo Cam (spec'd for a 5.7)
Precision 7475
PTE 60mm Wastegate
TurboXS BOV
Hallman Style Manual Boost Controller
Siemens Deka 80lb Injectors
Dual 255's in tank with one running on Hobbs switch
Stock Fans flipped to pushers
Built 4L60E
Yank SS3600
3.42 Rear End


Tuned on EFI Live Speed Density with a 3 bar map. The issue Lucas English (tuner) kept running into was that the MBC couldn't control the boost. With a 13psi spring in the wastegate it made 10psi flat. When we cranked the mbc it spiked to 14 then fell and held 11 out to redline. This is on pure 92 octane, 9 degrees of timing at peak torque, 14 degrees out the door.

550/520 for those with blocked work images.




Plan is to get an electronic boost controller so I can raise/hold boost better.

a-low

iTrader: (26)

Second time I hear about boost spike with these hs kits. Makes me worried
my kit. Got any pics of the dp?

HolyShiznit

iTrader: (11)

I will get pics when I get the car back. The boost spikes were because of the V1 version of the kits. Usually it only happened with a 75mm+ hotside type of turbo. Combination of not optimal wastegate placement as well as too cheap of a wastegate to control the newer type of turbos they were selling. The V2 kit seems to address all of these issues though.

a-low

iTrader: (26)

Yeah I had cut the original wastegate flange and welded a vband for a tial 44 I am
however running a 80mm magnum knockoff. Keeping my fingers crossed. Keep us posted

Shownomercy

iTrader: (1)

Numbers for those of us whose work blocks images?

munn79ta

hows the flipped stock fans working for you so far?

HolyShiznit

iTrader: (11)

550/520 revving to 6300rpm. So far haven't had any issues according to the tuner with the flipped fans. Haven't got a chance to really let it "soak" in traffic in 80+ degree weather either so I will update. However it didn't soak on the dyno when we "stress tested" with multiple pulls, idling, and turned off the dyno fan.

02LS1ram

iTrader: (17)

I have the V1 kit as well, but I had not any boost spiking issues. My PTE 44mm
Gate controls very well. That with a PT-7675 running 13psi gate only. None the less very nice results.

HolyShiznit

iTrader: (11)

Is yours a 6 speed or auto? Also is your 7675 the 3'' outlet or the 3.5. Big difference.

Sales@Tick

iTrader: (3)

Curve is nice and flat and it looks like it spools really early and holds that power. Should work out well when you get the boost controller dialed in.

HolyShiznit

iTrader: (11)

Ya no complaints about the cam even if we did have to shove it in the 5.3!

Shoaf85

iTrader: (9)

Where are you referencing boost for the boost controller from......intake manifold or a from compressor housing?

HolyShiznit

iTrader: (11)

I would have to check where the shop put it. I am guessing intake manifold would be the optimal point correct?

02LS1ram

iTrader: (17)

My car is 6speed. It's a 3.5" outlet also. I'm just curious,as I heard about boost creep problems here and there but nobody really posted anything up.

HolyShiznit

iTrader: (11)

6 speed and a 3.5" outlet is your advantage. I was under the impression that the turbo I was getting had a 3.5" outlet but it did not. I am sure some of the issues are related to that as it's choking it a bit.

Superman09

iTrader: (65)

All of these turbos are 3". Precision states it is a 3 5/8" exit, but that is measuring the long part of the flange, not the actual outlet size.

Looks like great numbers from the set-up, get that controller dialed in and you should have a lot of fun!!

HolyShiznit

iTrader: (11)

So the .96 a/r doesn't have a bigger exit? Weird. Good to know I guess.

Superman09

iTrader: (65)

The a/r is a ratio measurement of the size inside the housing, no relation to the outlet. No matter the a/r ratio, these all have the same 3" outlet size. Going to a larger a/r will move your power range up or down in the RPM band. Either have the turbo come on quicker and end earlier, or start later in the power band and keep it going in the upper RPM range with a larger a/r.

Spectre86

iTrader: (42)

get some videos of it brah

geaganmang

The boost spikes were because of the V1 version of the kits.