NitroFumesAteMyBrain

im new to the board and just wanted to introduce myself. I used to be a LS guy as my first f body was a 98 ws6 formula a4(11.47@117 dry kit, bolt ons)....it turned into a submarine during a hurricane I was completely out of the street scene for 8 years while pursuing a career wrenching on fuel dragsters and funny cars. Ive worked for some of the biggest names in the racing business, schumacher, densham, ajpe, toliver, and the list goes on. had to get out of the racing life due to a new baby boy so here i am....had to get a real job so i picked up a 93 formula for my driver and an 06 cummins for a backup....besides everyone needs a truck. i deal with a stage 2, big stuff 3, buick grand national on a pretty normal basis, so im a turbo guy. My formula is pretty tired with a 170k on her so im getting ready to go with a forged bottom end, while im down i might as well get the grinder after the heads, dig through the turbo pile, and slam one of the large hair dryers on it that i have laying around collecting dust. Luckily i have a buddy with motorvation thats more than willing to get me set up with a base tune as ive never messed with this whole chip burning process, ive only been around only DFI and mechanical injection set ups. wish me luck, im gonna build a 700+ HP street LT1 within a year fellas. ill be looking for a dyno in the houston area that can help me out with the fine tuning once i get rolling.....but for the mean time im gonna enjoy driving modding and playing with my new toy until i get my company vehicle in aug.

05HD

Sounds like you have a '06 Cummins daily driver and an F body paperweight. You have come to the right section of the forum for this! Welcome.

NitroFumesAteMyBrain

nah...im letting the wife drive the cummins while i work all the bugs out of this bird. she hadnt been driven in over two years until i picked her up the other day and drove her to her new home.

gregrob

iTrader: (8)

If you're truly going to that extent of a turbo build, ditch the stock engine management...

and welcome.

NitroFumesAteMyBrain

the factory managment on a 3 bar map and custom chip should be able to do 700 crank hp...ive seen quite a few 600 plus GNs on factory comps. i should be able to get there with less than 20 psi.....and if i cant, i suck!

gregrob

iTrader: (8)

Ok...

I8ASaleen

iTrader: (9)

Yeaaaaa...about that...

Not gonna work too well. Seriously consider getting a new engine management system, and someone who knows how to tune turbo builds really well. but hey it's your car lol

NitroFumesAteMyBrain

do enlighten...

gregrob

iTrader: (8)

Just research OBD I camaro EMS. I wouldnt use it for a boosted build period. Not even sure a 3 bar MAP will work with it, and theres only one experimental 2 bar MAF tune that someone finally wrote but the resolution SUUUUCCCKKKSSS either way you go.

It's a win win to convert to FAST, DFI, Motec, or LS ignition (probably the cheapest) and get rid of the opti, and have 100x the tuning and data logging capability of the stock stuff.

JMO though.

Wasn't disagreeing with you, my car will be 600hp on the nitrous, so it's easily doable. Just much more tricky with boost.

NitroFumesAteMyBrain

it would be a speed density tune, i would think that as long as the fuel map was written for 21 pounds you should be good for 21 pounds....ill have to call my guy at motorvation. if not ill use big stuff....but hell, even an old, old, 80s accel would do 3 bar. i just replaced one on a GN that went to Big Stuff 3. trust me i understand the advantages of DFI, i deal with it quite a bit. but notice i said deal with it...not buy it. i poor boy it as much as possible.

NitroFumesAteMyBrain

give me a base setup and a race track and ill do it myself with DFI.....this isnt my first or second or even third turbo car build....i deal with GNs on a regular basis. it is my first LT1 build and unless the ecm cant read a 3 bar map sensor the program shouldnt be an issue, its not for a GN.

01ssreda4

iTrader: (96)

I dont know much specifics on the boosted apps but the newer computer and operating system sure seems to make more sense.

NitroFumesAteMyBrain

i ripper this from another site but if the ecm will read 11.5 pounds, it has to be able to at least read a two bar map(14 pounds)....

1982z28with18s on cz28.com and skinnies on ls1tech.com

1996 Formula

355ci 9.5:1 CR

Custom Log Manifold kit (keeps A/C) with BB T76 Q trim and 44mm wastegate @ 11psi

Stock Heads

Stock Cam/intake/TB

TH400 w/ 4000 stall and 3.42 gears/10 bolt

Stock ECU

Performance:

(5psi 1st and 2nd gear, 7psi in 3rd gear - 91 Octane 15 degrees timing) - 11.2 @ 121mph w/1.56 60'

Track run

(8lbs in 1st, 11.5 in 2nd and 3rd, lifting 1-2 shift and tranny wouldnt shift correctly - 91/110 Octane w/ 24 degrees timing) - 10.8 @ 127.8mph w/1.56 60'

Guess ill try to talk with him and let him know........since it wont work.

NitroFumesAteMyBrain

maybe i shold let him know also(theres a TON of 700 crank hp cars running on stock ecm).........maybe ive come to the wrong site, or maybe im just talking with the wrong people. please dont take offense, im just enlightening...

cvccbum on cz28.com

1994 Trans Am

355ci

Cast Manifold kit (keeps A/C) with TC76 turbo and 60mm wastegate.

LE2 Ported Factory Castings

BRE Cam

M6 with 3.42 gears/10 bolt

Stock ECU

Goal: 500rwhp on low boost / 600rwhp on high boost

NitroFumesAteMyBrain

Ill stop now....i think you get the picture.

Ralls on ls1tech.com

1994 Trans Am

383ci

1 5/8" Tubular Header kit (keeps A/C) with T76 turbo and Tial 44 mm wastegate

Ported Factory Castings

Custom Comp Cam

4l60E w/3200 stall with 3.00 gears/Fab 9"

Stock ECU

Single Walbro pump + hotwire and 60# injectors

645rwhp/627rwtq @ 15psi

96lt1m6

iTrader: (31)

Do your thing bro......I understand the GN stuff I worked for Conleys Performance Plus in Tx and we had GREAT success in going fast. Welcome to the board. I would say you will have an easier time in the FI section but they are so PRO LS but there is alot of common ground..

95mysticta

iTrader: (4)

I dont think what people are saying is that it cant be done but there just thinking logically that if your going to be spending the big cash into a fully built turbo setup why not just go for the better/faster ecu to make the best out of the setup and run that much smoother and even squeeze more power out of it. Sounds like a badass built and cant wait to see it progress!

ws6t3rror

iTrader: (3)

You can run the stock ecm on boost, the question is though how robust will the tuning be.

Here are the issues in clear detail for you, but I won't go into great detail since you're smarter than the rest of us. The lt1 pcm doesn't know what the **** anything besides 1 bar is. It only has tables and resolution for 1 bar as far as timing and fuel goes. There are no custom operating systems for the lt1 pcm for boost. Speed density is your only real option for anything that will make the power levels you're talking about with the ecm supplying the fuel because a maf sensor will freak.

Having said that, it can be done. However you just cut the resolution for spark and fuel down to 1/3 of what it was before, which was what gm deemed acceptable for a driver in sd mode. Now here is the next hurdle. The lt1 pcm will not let you input values above 100 into the ve tables which you will easily require. So you end up dicking the injector constants around and scaling the tables accordingly this in turn causes some other issues. Then there are the issues like getting the engine to idle and drive at low load with the size injectors required to fuel the engine.

I'm just going to stop there... There is nothing poor boy about the **** you're talking about doing. Even if you can get the turbo fitted up on the cheap, there are tens of thousands worth of other things that have to be purchased to support the kind of build you're talking about.

T/ALT1

iTrader: (3)

This car and skinnies car both have the 94-95PCM so you don't have to burn chips to change the tune, you just have to reflash which makes changes alot easier/quicker. I am swapping my setup from n2o over to turbo also and found a Fast DFI setup with wiring harness, datalogger, 02 sensor etc... $850 so thats the route I am going along with an 88mm turbo on E85. Later

defaultexistence

iTrader: (11)

Search " EFI24x" it converts our shitty engine management system to the one that was in your LS1 car I.E. no problematic distributor, coil on cylinder and tuning options....for the loot your going to spend on the engine build ,and the goal you wish to achieve $1500 bucks is a drop in the bucket.
https://ls1tech.com/forums/lt1-lt4-m...n-lsx-pcm.html
http://www.eficonnection.com/eficonnection/24x.aspx


i was going to buy here ..as the prices are decent,this is from an email to me. below




This is Jeff,
Mike..Here is the pricing you wanted!!

Engine Harness 325.00
A/C Harness 25.00
411 PCM & Flashed 175.00
24X Kit 490.00
Total 1015.00
Shipping Free



Steve & Jeff @
Sand and Street Performance Wiring
12881 Main Street
Box 1313
Mayer, AZ
86333
928-632-4372 Shop Line
928-460-0764 Shop Tech Line