I keep hearing about the Dom 2.5 but can never find it. Do you know where I can find it?

 

How about from Blouch themselves... I bet Buschur could get it for you!!!

 

I guess you wouldn't think the turbine housing is TOO big since the wastgate passages shouldn't be flowing so much bypassing the turbine at higher RPM's.

So what is the max preload of a Forge WGA that I can use, is there a practical limit? I've got 2 turns preload and I'm still holding a minimum of 18 psi boost direct to wastegate which is maybe 1 psi higher than 1/2 turn preload. The same 2 turns preload was about 22 psi direct to wastegate on the stock turbo so the pressure behind the wastegate flapper must be huge on this Garrett.

Should I try and just jump right to 5 or 6 turns preload and see where that gets me? As long as I can run as low as 24 psi for hotter days at a road course I'll be happy, then hopefully it will hold at least that on the top end when I turn the boost up. Has anyone else tried to elminate the 2 psi taper I'm getting from 7000 to 8000 rpm and been successfull?

Edit: 7 turns preload on the Forge WGA and I am finally at 23-24 psi minimum boost. Now I can get 27 psi at torque peak with no spike, tapering to 26 psi at 6500, then it drops to 25 psi by 7300, and 24 psi by 8000.

 

i just cranked mine over this morning, now i need a tune before i get on it. =D

hiboost or anyone want to lend me a conservative map so i can drive it to my tuner? or else i need to trailer it up to dallas, 4 hr drive. =)

i just realized u use a mbc, im going to install a 3port boost soleniod and let factory ecu do its thing.

i got fmic, tbe, uicp, aem intake, 3076r, 800cc, walbro fp.

 

I hope someone gets this thing to work correctly soon. I'm ready to buy something and I'm about to go with the fp red if nobody gets this one to do anything. Money is in hand already.

 

I wish some vender would chime in and give their experience with this turbo. I know as long as we have waited for this turbo to come out their are shops running this turbo on their cars. Let us know how they are doing...

 

I haven't read every single post in this thread, but has anyone contacted garrett about the issues with their turbo? They need to be fixing this issue with their customers.

 

My only issue currently is the boost taper above 7000 RPM due to the WG flapper being easier to push open than traveling through the exhaust turbine. If I can get it to hold 26 psi to 8000 rpm I fully expect to lay down 380 whp on a MD which would be ~500 Crank HP and good for mid 11's with proper driving and 4th gear rev limitations aside. 30 psi and a race gas tune could push that quite a bit higher but I want to get the pump gas setup dialed in perfect first.

If you hook up your Boost source directly to the WGA you should only get a very conservative 18 psi of boost assuming a Forge WGA. Also be sure to verify your spark plug gaps aren't beyond .022" - .024" or you will start to have hessitation issues when cranking the boost past 24 psi which may have otherwise been fine on the stock turbo. If you tuned for the 800cc injectors and Walbro FP before installing the turbo, that should be plenty safe to drive the car to the tuner assuming you don't road race the car. If you haven't tuned for the injectors yet then try these settings to get you in the fuel trim ballpark for Deatschwerks 800cc injectors:

Fuel Injector Scaling: ( Lower settings relative to actual Injector size richens up idle and cruise LTFT's evenly, usually 15-20% lower is the range to be in)
665 cc/min (was good for my AMS Intake with 3" sensor housing)
to
680 cc/min
to
696 cc/min (likely better for Intakes using the stock 2.8" sensor housing)


Injector Battery Voltage Latency Compensation: (Raising these typically richens up Idle LTFT more than Cruise LTFT)
------------ Richer ----------------------------------------------------------- Leaner
4.69v ---- 6.120 -------------------------- 6.120 -------------------------- 6.120
7.04v ---- 6.120 -------------------------- 6.120 -------------------------- 5.904
9.38v ---- 3.384 -------------------------- 3.264 -------------------------- 3.048
11.73v -- 2.232 -------------------------- 2.136 -------------------------- 1.992
14.08v -- 1.632 -------------------------- 1.560 -------------------------- 1.464
16.42v -- 1.128 -------------------------- 1.104 -------------------------- 1.032
18.77v -- 0.816 -------------------------- 0.768 -------------------------- 0.744
LTFT = 0% Idle/2% Cruise ----- 5% Idle/3% Cruise ------------- ? Idle/cruise

My Idle LTFT is around 0% with this setup and cruise LTFT is hovering around 2% with the "Richer" settings that accomdate the AMS Intake with 3" sensor housing. These were EvoScan numbers and I found that they are about half the values reported in OBD2 programs so you want to be +-2.5% in Evoscan and +-5% in OBD2 LTFT's. I may dial back the voltage latency compensation slightly so that they both hover around 2% but it seems fine for now. Keep in mind that when you enter values that it rounds up or down to the nearest valid entry so fine tuning is limited slightly by what values it will accept.

 

Well, CBRD has a 3076 on their car and made 370whp with:
stock ic pipes, cbrd fmic, cbrd catback, stock downpipe and o2 housing, stock inlet pipe

CBRD just tuned a car with the following mods and the stock turbo to 297whp.
-ETS UICP
-ETS Intake
-AGP FMIC
-CP-E Quickpower Pipe with HFC
-CP-E Dual Catback Exhaust

These were done within the same week, same tuner, same dyno, so I'm not sure you're going to get a better comparison. The 3076 put down a bit over 70whp more with a few less mods, on pump gas. IF CBRDs car had a O2/downpipe combo and cams, I see it over 400whp on his dyno. Through in a HFC or a test pipe, and you'll gain more. I think cars dyno at roughly 225whp on CBRDs dyno? So a potential 200whp gain on pump gas, or roughly 85%-90% gain.

 

So would it be best to go with 800cc injectors or should someone with this turbo go with 1000s?

 

800cc are fine if sticking with pump gas, if you plan on 30+ psi of boost on race gas, you may need 1000cc assuming you have cams and all the supporting mods and exceed 550+ crank HP range. I ended up settling on the 800cc just because the 1000cc options were still limited a couple months ago, and I don't think the Deatschwerks 1000cc area released yet so you may have to deal with pigtails and adapters.

 

I hope this issue gets fixed. My friend decided to go with the FP because of this issue. I just got my sentra running with a TS 3076r and it is incredible. Feels like over 300whp easily. So I know the 3076r can pump out good power, and on the higher pressure ratios that the Evos run at it should wake it up a lot! I would love to see 450AWHP with this kit. There are guys running twin scrolls on FWD hitting over 550whp with this turbo.

 

My buddy has a k24 mugen si with the 3076r that I'm sure has to be over 450whp. That's on around 25 psi. I'm sure if he went to 30, he would hit 500 easily.

 

I thought this turbo was going to out perform the blouch turbo, and the fp red, it seems to me from what Ive have read it hasn't out done either of the two... I will wait for a few more weeks for someone to thow up some big number's if that doesn't happen I'm going with Buschur and the Blouch turbo...

 

I have been to Blouch's website, and they dont have anything about a Dom 2.5 on there. I will just have to call them about it.