328HP/343TQ @21PSI!! - Boost Forum

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328HP/343TQ @21PSI!!
Thursday, April 06, 2006 4:34 PM
Ok, I just got back from dyno and those are the new numbers on my motor.
I was running SRT-4 Stage I injectors which are 580cc and I switched to DSM 650cc injectors, and the sky opened and sun was shining!!!

Here was my problem with the SRT injectors. They are 580s on 58 psi of fuel pressure, now if we run them on 50 which is what our idle is at they are 500cc.
On 70 psi of fuel pressure if you do the calculations, which is what I am running they are 625cc.
That was NOT sufficient enough for 16 psi, I was putting down 310 lean as hell, sometimes even 12.9:1 A/F and it was knocking/misfiring pulling up to 8 degrees of timing.
That was all done on my 11.90 sec pass.

Now I switched to 650cc injectors DSM's made by FIC (Fuel injection Clinic) and they are 650's at 43 psi of fuel pressure.
I am running them on 50 on idle and they are 700cc. On WOT and 70 psi of fuel pressure they are 830cc.

Ok now lets get to the fun part, cause I know all of this is going to be asked.
I just put the injectors in today and drove the car to the dyno on 15 psi and it had a new rev limiter of 5000 RPM. lol Put down 227 hp on 5000 rpm.
It was so rich that it couldn't go to higher revs.
Then I turned it up to 18psi and it leaned out a bit, up to 260ish hp.
19 psi got me 295.
Now this is where I had to play a little bit, on 20 psi I got about 323/315, and 21 got me about 330/325. I did a pass in 4th gear that gave me the number above but I turned it down since my valve train is BONE STOCK!!

343 tq was solely gotten based on A/F, I lean it out to 11.6:1 and TQ rockets, but I am not safe there.
Right now it is on a very conservative tune.
A/F is below 10.0:1 until 5000 rpm, at that point if the motor is cold it will carry 10.6:1 and if it is hot it will carry 11.1:1.
I am having timing issues where the ECU is pulling it, and that is why I have to stay soooooo rich.
I could have made this HP on 19 psi or even 18 but I would have to run 12.0:1 A/F and it WOULD pull timing at that point hence such a big PSI number and such a LOW HP numbers.

All this is done on a S-AFC, non-adjustable FMU, 650cc injectors and a Wally 255/
If anyone wants to know, my idle on 700cc is very nice (No sarcasm involved).

Track is next to see if I can get some 11.60's or 70's.



Best time:"""11.946""" @ 114.73 mph @17psi 1.83--60"
11 second daily driver!!!!
Race Related 727-561-9440
Shop of choice for your 11 second J body!

Also, built bottom end and or top end LSJ and L61's available.
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Re: 328HP/343TQ @21PSI!!
Thursday, April 06, 2006 4:39 PM
very nice great job, keep up the good work! Maybe the Hp tuners stuff could help the timing issue some?



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Re: 328HP/343TQ @21PSI!!
Thursday, April 06, 2006 4:47 PM
Thanks for props, but I don't think I am interested in HP Tuners, if they cannot provide me with a 3 BAR MAP option.
I am sick and tired of having to trick my car into thinking some other carp and re flashes that are NOT meant to run Turbos.
I am pretty set on running a Haltec E8. As soon as I get $1750.



Best time:"""11.946""" @ 114.73 mph @17psi 1.83--60"
11 second daily driver!!!!
Race Related 727-561-9440
Shop of choice for your 11 second J body!

Also, built bottom end and or top end LSJ and L61's available.
13's ----12's ----11's ----10's

Re: 328HP/343TQ @21PSI!!
Thursday, April 06, 2006 4:55 PM
that is rediculous bro! i was just looking at my boost guage today, thinking how crazy it would be if i was ever hitting anywhere around 20, thats gotta be one badddd ride, thanks for sharing and congrats



Re: 328HP/343TQ @21PSI!!
Thursday, April 06, 2006 4:57 PM
Thats pretty impressive Cant wait to hear some 1/4 mile times! What is your curent ignition setup? you said it was pulling timing i assume its stock? any reflash or anything like that? also, what ya got the plugs gapped at?

11 sec j.. sweet



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Re: 328HP/343TQ @21PSI!!
Thursday, April 06, 2006 5:14 PM
Is that with the 2.0L eco?



Re: 328HP/343TQ @21PSI!!
Thursday, April 06, 2006 5:17 PM
Amazing.!!!!.....I wanna see a video of an in car shot at the track at 18 psi. I think id probably be drooling on myself. Now if i could just get mine tuned right id be happy.



Re: 328HP/343TQ @21PSI!!
Thursday, April 06, 2006 5:20 PM
^^^Nope, 2.2 eco

Nice numbers man.. Congrats!!











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Re: 328HP/343TQ @21PSI!!
Thursday, April 06, 2006 5:21 PM
nope its on a 2.2 eco


sweet numbers man i cant wait to see the times drop even more.



Re: 328HP/343TQ @21PSI!!
Thursday, April 06, 2006 5:29 PM
congrats yasmin. amazing work.



Blew it up, build numbers coming soon
Re: 328HP/343TQ @21PSI!!
Thursday, April 06, 2006 5:37 PM
yea, i want to see videos... or even a very clear sound clip of a good pull...

What are the specs on your turbo?




Re: 328HP/343TQ @21PSI!!
Thursday, April 06, 2006 6:49 PM
Great numbers!!!

I nly have a question on what you are saying about the CC of the injectors. I totally do not get how 650cc injectors are anymore than just that. I understand that if the injectors are bigger at the same psi of a smaller injector they will put out more. So saying at idle they are putting more fuel out like a larger injector makes sense, but at WOT they are still only a 650cc injector. unless I'm totalling missing something and if I am please someone fill me in.



FU Tuning



Re: 328HP/343TQ @21PSI!!
Thursday, April 06, 2006 6:57 PM
nice job a 10 second daily driver would so kick a$$ keep it up..
Re: 328HP/343TQ @21PSI!!
Thursday, April 06, 2006 7:00 PM
An injectors rated flow is at a specific fuel pressure... in most cases that pressure is roughly 45psi. If you run an injector rated for 500cc @ 45psi, @ 60psi... its going to flow more than 500cc.
What you have to remember is that just because youre running 33% more fuel pressure, doesnt mean your going to flow 33% more fuel. There are actual equations you can use to figure out exactly what rate your injectors will flow @ whatever pressure you decided to run.



Re: 328HP/343TQ @21PSI!!
Thursday, April 06, 2006 8:15 PM
Bad ass man... Props to all ur hard work!


here comes the boost!
Re: 328HP/343TQ @21PSI!!
Thursday, April 06, 2006 9:19 PM
what are your views with using MS on such high hp numbers?

I think what Im getting at is what does the haltech have to offered thats got you hooked?

I know controlling timing is going to make your life easir but how are you going to keep it from misfireing?


"Kick azz is my boost hero!!! "
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Re: 328HP/343TQ @21PSI!!
Thursday, April 06, 2006 10:49 PM
Thanks for all the props guys.
On 16 psi car did 11.90, if it does anywhere close to 11.50 on 21 psi I am going to have to run a cage in it, probably 4 point and I will have my boy make me a camera mount and I will get you guys some videos of 21 psi pulls in the car at the track.

To make it shorter and sweeter, this weeked I am filling up on some C12 and I got some unsettled scores to even out and take care of, I will get some videos running some close to 120mph trap cars..
I just raced (of course at the closed track ), a Comp TA Trans Am will heads and cam that put down 367hp to the wheel.
This was the race, we went from a 40 mph roll, I started about 1/2 car ahead , didn't mean to, I spun in 2nd, he evened out the race, I poped it in 3rd pulled him about
1 1/2 cars, and threw it in 4th and put another 2-3 cars on him.
Total of about 4-5 cars.
It is a friend of mine and he told me all I wanna tell you is, "wow, that is a damn quick car, man you are out" He is saying I should be trapping about 119-120mph, if not 122 or so on race gas.

Now, to answer some of youse questions.
Stock ignition, it is pulling timing, I have to log it on Saturday or Sunday, it is most likely misfiring, due to whatever.
I don't think it is knocking cause tune is very mild.
If I tuned it on 12.0:1 A/F the car would have put down 360-370 easy.
Bone stock valve train, everything in the head is stock
Eagle rods
Wiesco 8.9:1 pistons stock bore.
Stock rod bearings new.
ARP's for head studs.
Stock head gasket
Head machined .005 inch.

As to explain to you what I mean John Higgins.
When every manufacturer makes injcetors the flow the at certain PSI of fuel pressure and that is what they flow at THAT particular fuel pressure.
So for example: SRT injectors, Stage I's are 56.5 lbs or 580cc AT 58 psi, so I don't have 580cc injectors until I hit 58 psi of fuel pressure, so on idle I am running 50 psi of fuel pressure and if you do that math they are 500cc/49lbs AT 50 psi.
That is what I mean when I say idling 500cc injectors.

Now DSM's quote THEIR injectors at 43.5 psi so so does Ford and RC injecotrs and Accel does I think 39 psi.
So say I have 63.5lbs/650cc injectors, they are 650's at 43 psi of fuel pressure.
If I am trying to idle them at 50 psi of pressure they are not 650's anymore but 700cc.
And of course at my WOT and full boost, at 70 psi of fuel pressure they are 830cc.
Some injectors cannot go that far but they just CLIP OPEN at certain psi of fuel pressure.
So lets say my 650 clip open at 60 psi of fuel pressure, beyond that point any more psi I try to throw at them they are just going to give me about 750cc, so I increase the boost I will start leaning out really bad up top and I am not, so mine are NOT clipping open.

As for spark plugs I am running 2 step colder NGK Irridiums,I made a post about this a while back and noone seemed interested but everyone wanted SRT plugs, even tho the Irridiums are MADE for our motors with proper length and all the good stuff.
I have the part number available if anyone wants them I think it is in my registry, if not let me know I will post it.

As for management I will not be running Haltech, I just talked to this guy tonight (a local) who makes his OWN standalones, fuel and ignition parts, and you CAN buy them seperate.
I am going to get the fuel part and it is $550and later upgrade to ignition as well, which is another $250.
I will be running LSJ head with cam sensor and individual coil on ignition with that set up.
Later down the road LSJ block as well, this is all done on a 2.2L right now, I got bigger plans for the LSJ .

Sorry for a long post,



Best time:"""11.946""" @ 114.73 mph @17psi 1.83--60"
11 second daily driver!!!!
Race Related 727-561-9440
Shop of choice for your 11 second J body!

Also, built bottom end and or top end LSJ and L61's available.
13's ----12's ----11's ----10's

Re: 328HP/343TQ @21PSI!!
Friday, April 07, 2006 1:24 AM
kick ass numbers.
3 questions

1. how hard is it to tune and whatnot with your safc and to get it to idle?
2. what are you doing about your map sensor and runnin that kind of boost?
3. what octane were those numbers on?



Re: 328HP/343TQ @21PSI!!
Friday, April 07, 2006 1:26 AM
also forgot to add, but what rpm do u hit full boost at?



Re: 328HP/343TQ @21PSI!!
Friday, April 07, 2006 2:03 AM
sounds great man. personally i think you are running too rich. but its your car




I was a retard, and now I'm permanently banned.
Re: 328HP/343TQ @21PSI!!
Friday, April 07, 2006 4:56 AM
It is not that hard to tune it at all, just like any other injectors, except the idle and deceleration is tricky.
I am doing nothing about the MAP sensor.
Those numbers were all on pump gas 93 octane.
I hit full boost 20+ psi at anywhere between 4000-4500 rpm, start making it as low as 3000.

Spotabee, I know it is too rich I just don't run it leaner caue of the timing thing. I lean it out and the ECU pulls timing automaticlyy and all tose HP that I gain go down the drain.



Best time:"""11.946""" @ 114.73 mph @17psi 1.83--60"
11 second daily driver!!!!
Race Related 727-561-9440
Shop of choice for your 11 second J body!

Also, built bottom end and or top end LSJ and L61's available.
13's ----12's ----11's ----10's


Re: 328HP/343TQ @21PSI!!
Friday, April 07, 2006 8:15 AM
Wow - those are some nice / tq horsepower numbers. Nice job.



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Re: 328HP/343TQ @21PSI!!
Friday, April 07, 2006 9:43 AM
awesome man.




Re: 328HP/343TQ @21PSI!!
Friday, April 07, 2006 11:57 AM
Sweet
Reminds me of Johnny Mack...



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Re: 328HP/343TQ @21PSI!!
Friday, April 07, 2006 4:50 PM
Yasmin,

I haven't caught you on AIM so I haven't been able to talk to you yet... but I have to say for that PSI those are fairly weak #'s.

An efficient turbo setup will make a lot more than 10hp / psi when setup correctly both flow/heat and fuel wise. I realize you're running an ungodly rich mixture to counter some timing the ECU is pulling, but even with that your #'s are a lot lower than I'd expect at 21psi.

Let me make a rough numerical example:

Stock Eco WHP: 130 whp
Turbo WHP / psi: 21x10 = 210 whp

= 330 whp... which you're not even making... you're making less than 10 whp / psi.

That begs me to question whether the turbo is running out of air or the turbo is running out of breath at such a high PSI... are you out of your efficiency range?

Before you come back at me and state the obvious that you're running 10:1 a/f etc... I know you are. But even when you take that into account you're falling way short of what I would expect to see at that PSI...

In fact I'd almost expect 15 whp / psi if the turbo was of good size even with too much fuel which would = 315 whp over stock + 130 stock = 445 whp...

I only ask all of this because it SEEMS the motor is falling way short somewhere, even with the over-richness. With that said those are some of the highest #'s anybody has seen on a J-body for sure and you should be proud.... but I am almost certain that at that PSI (turbo dependant) you have another 100 whp hiding in there somewhere.

Good luck and keep working hard its obviously paying off.

-Chris-



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