Which Head Unit for 700+rwhp?
Bryan, sounds good but the problem with the stock computer is that the big injectors might potentially load up and idle poorly. To be honest, I don't see why a FAST would work better than a stock compure as far as pulling out fuel at idle maybe I can get an expert to jump in.
TECH Regular
Joined: Nov 2002
Posts: 408
Likes: 0
From: Houston TX (Chicago/Evanston IL)
Hey John, I was looking at the specs on your blower a d1sc and a f1. The ys trim is smak dab in the middle of the d1sc and the f1. at the rpm that we are spinning our blowers at we are at about the same cfm. You more mid range cfm (larger blower) me more top end (ove spinning mine a bit) It will be cool to compare results!
Adkoonerstrator
iTrader: (4)
Joined: Nov 2001
Posts: 21,420
Likes: 0
From: Deep in the seedy underworld of Koonerville
I have 57# injectors right now and they have an idle pulsewidth of ~1.9ms. That leaves some room for bigger injectors before you hit the 1.68ms minimum pulsewidth limit in the stock computer.
My idle is only 650rpm on a 5.3L motor so if you have a bigger motor you'll also have a slightly longer idle pulsewidth which will give you more room for bigger injector before you hit the minimum pulsewidth limit.
My idle is only 650rpm on a 5.3L motor so if you have a bigger motor you'll also have a slightly longer idle pulsewidth which will give you more room for bigger injector before you hit the minimum pulsewidth limit.
Fast Computer I can't use the FAST computer because of several reasons. Let me share.
This will be a truly street driven car. Yes I know it is a bit much, but.
As I live in NC, and this is what really seperates the truly street driven cars from the wannabes and the claimers is, It has to pass NC inspection. For now that is an ODBII test, and you have to have an ODBII computer to pass. Therefore the FAST computer will not work in my application. Plus I want to have all of the functionality of the stock computer, Emission controls, etc...
This car has two real cats on in it, and real o2 sensors on it and I will make that power mark. 850 at the flywheel before 6000 rpm and it will pass inspection and it will run on 93 octane gas. If I cannot make it run on 93 octane gas, it will at least run on 95 octane gas. There is a very inexpensive additive that I can buy for about $1.50 a gallon and it is good for a tank and a half of gas, and it raises the octane to 95-96.
This is a 427 so there should be enough motor there to handle the pulse width of a 72# injector. OR so the computer can handle it. And lastly I am doing it because I can.
I ordered the F1 headunit yesterday, and I am going to sell the prototype 8 rib bracket that I purchased from ATI procharger for the F-body cars. It was modified and works exactly as it should. But when using the F1 blower, it is probably not strong enough and I am going to have it duplicated in steel just for safe measure. I do not want it flexing under boost.
This will be a truly street driven car. Yes I know it is a bit much, but.
As I live in NC, and this is what really seperates the truly street driven cars from the wannabes and the claimers is, It has to pass NC inspection. For now that is an ODBII test, and you have to have an ODBII computer to pass. Therefore the FAST computer will not work in my application. Plus I want to have all of the functionality of the stock computer, Emission controls, etc...
This car has two real cats on in it, and real o2 sensors on it and I will make that power mark. 850 at the flywheel before 6000 rpm and it will pass inspection and it will run on 93 octane gas. If I cannot make it run on 93 octane gas, it will at least run on 95 octane gas. There is a very inexpensive additive that I can buy for about $1.50 a gallon and it is good for a tank and a half of gas, and it raises the octane to 95-96.
This is a 427 so there should be enough motor there to handle the pulse width of a 72# injector. OR so the computer can handle it. And lastly I am doing it because I can.
I ordered the F1 headunit yesterday, and I am going to sell the prototype 8 rib bracket that I purchased from ATI procharger for the F-body cars. It was modified and works exactly as it should. But when using the F1 blower, it is probably not strong enough and I am going to have it duplicated in steel just for safe measure. I do not want it flexing under boost.
D-1r
Originally Posted by Trojan T/A
I am thinking about doing a supercharger, but making the kit from scratch. My question is which blower would be best for 700+rwhp. Going by flow numbers I have looked at the Paxton Novi 2000 (1700cfm), Vortech YS-trim(1500cfm), and Procharger F1 (1525cfm). Which of these three blowers would be best for a front mount intercooled setup that will see mostly street use? The engine will not be built, but tame, and will be relying mostly on boost. Also, what would be the expected max hp at the wheels to expect with each? Thanks
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Wow, old thread back from the dead. It seems with the newer tensioners the D1SC is capable of 700rwhp. There have been some nice advances in the past few months to make the ATI work really well. I've decided to hold off boost for now, but when I do get to it, I'm going with a YSi or a Roots/twin screw and cut up the cowl.
TECH Regular
Joined: Nov 2002
Posts: 408
Likes: 0
From: Houston TX (Chicago/Evanston IL)
Well I dumped the ATI bracket, Intercoolers, tubing ect....
I am now running a Procharger F1 head unit, Front mount IC,Custom brackets (blower now faces the correct way, no more reverse facing blower for me) and Cog pulleys. Mid 700 rwhp here I come!
I am now running a Procharger F1 head unit, Front mount IC,Custom brackets (blower now faces the correct way, no more reverse facing blower for me) and Cog pulleys. Mid 700 rwhp here I come!
