recommended injector for boost
Thread Starter
Teching In
Joined: Oct 2012
Posts: 39
Likes: 0
From: Hamilton, ON
recommended injector for boost Running a stock setup ls1 2000 Firebird, looking for a good and easy to tune injectors for around 9 psi boost. Was thinking Bosch 42lb green giant but any input is appreciated.
TECH Regular
Joined: Dec 2014
Posts: 484
Likes: 18
From: Emory Texas currently
My deka 60s were only good to 10psi 550 hp if u plan on going further at any time save yourself the hassle get 80s from the get go I had to send mine back to be made into ,84s plus added methanol
TECH Regular
Joined: Dec 2014
Posts: 484
Likes: 18
From: Emory Texas currently
I haven't done anything don't know the first step to tuning I paid for all my dyno tuning he got it to 550 and said it's safe right now but get bigger Injectors and alky controls meth kit bring it back we can turn it up ??
Holley 120's are the best bang for the buck IMHO.
https://www.holley.com/products/fuel.../parts/522-128
However, I'm running Deka 60's right now and like em just fine, but I'm running N/A.
https://www.holley.com/products/fuel.../parts/522-128
However, I'm running Deka 60's right now and like em just fine, but I'm running N/A.
Restricted User
Joined: Mar 2014
Posts: 7,192
Likes: 109
From: Ohio
Holley 120's are the best bang for the buck IMHO.
https://www.holley.com/products/fuel.../parts/522-128
However, I'm running Deka 60's right now and like em just fine, but I'm running N/A.
https://www.holley.com/products/fuel.../parts/522-128
However, I'm running Deka 60's right now and like em just fine, but I'm running N/A.
Trending Topics
TECH Regular
Joined: Dec 2014
Posts: 484
Likes: 18
From: Emory Texas currently
So are u saying this is a tuner issue or should I be looking into what's going on here I built this truck from nothing to what it is I'm just not tuner capable I have to rely that my money is going to someone that's got it figured out
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
Teching In
Joined: Nov 2023
Posts: 11
Likes: 2
You probably had the wrong settings for your deka 60s. Good luck finding the top secret data no one will share for deka injectors. I have tried every example of data I could find online and they just run like ****. I am actually considering decamping some stock ones. May just drop my dekas in the trash at this point, I have wasted so much time on them, I have already paid for a set of $1000 injectors in grief.
You probably had the wrong settings for your deka 60s. Good luck finding the top secret data no one will share for deka injectors. I have tried every example of data I could find online and they just run like ****. I am actually considering decamping some stock ones. May just drop my dekas in the trash at this point, I have wasted so much time on them, I have already paid for a set of $1000 injectors in grief.
With the SAME PSI and the SAME AFR and the SAME TIMING the Deka 60's just wouldn't produce the power that the 80's did.
I've spent HOURS tuning the Deka 60's and have tons of logs to demonstrate this. At the track, my runs were a full 3 tenths slower and when you look at the graphs of the runs for DEKA 60 versus DEKA 80 they were basically identical with 12PSI at the time, same AFR, same timing, but the Deka 60 just plain didn't have the power that the 80's did. Was also able to demonstrate using HPT acceleration maths. I tried many variances of Deka 60 injector data, and just figured I was doing "something" wrong. But I'd switch back to the 80's with slight tuning and the power was back. It's just harder to tune the IDLE on the 80's with my uncammed low breath 5.3 idling at 750rpm
It did not make sense how it's possible. X amount of fuel and Y amount of air should produce a static amount of power. Yet with the 2 different injectors, it was night and day. And yes I know this is totally illogical. But my Deka 60's are on a shelf ready to sell at a swap meet if/when I go. I would also question whether mine could reach 550HP, it'd need SO much boost/fuel in my application to get that high.
Last edited by mk3cn4; Dec 5, 2023 at 02:17 PM.
I tried going the decap route but the ones I selected were flex fuel ones (higher flowing) and also seemed to also have poor control with very narrow pulsewidth for idling. I think I should have done NON-flex ones and decapped those, if that's a thing I don't even know. But I was able to get maybe 15 of those (like $7 each LOL) and got 8 that balanced within 5% per bank. They flowed as high as the deka 80's if I recall on my crappy little 4-injector bench tool.
I think right now I'm using injector data from Sloppy Mechanics tunes of cars similar to my setup and it works but I still have trouble getting the 80's to idle well with my "low breathing uncammed stock 5.3" at 750rpm lol. I can post that injector data for you if you want but you should hunt out someone who has a build like yours. I'm boosted stock 5.3.
Ironically I could get the Deka 60's to idle much better using published injector data, they just didn't produce as much power in my tune/build. I too tried so many variations with the 60's that I honestly don't think it's my tune that's the problem. Spray pattern? Unclean cutoff? Counterfeit? I am like 99% sure they are not fake, did a lot of research into that too. No idea why mine don't have the power. DO YOUR RESEARCH on the Deka 80's, there are a LOT of counterfeits out there for those. Maybe more fake than real at this point LOL.
Last edited by mk3cn4; Dec 8, 2023 at 08:10 AM.