putting the 383 on the dyno today
i raced them with my old cam in the car, and ive changed tunes and cam this llast week. but the pressure never dropped at wide open like it does now so it must have changed here recently cause it didnt seem to have enough pressure to start the car to put it up on ramps this last time.
it was a mad z28 tune, ion told me that its very doubtfull the tune could be that far off. but im hoping that it will be good with this new pump and a new filter. i found a wideband sensor and guage for 180 dollars on ebay so im probly goin to invest in that lol
ok i changed the pump and at idle i think its around 40 to 41 psi, then if i goose it any it jumps up to 44 or 45 i think. kinda hard to tell, and i dont know how acurate my mounted guage is. if this isnt right should i change the regulator next? i have a used one here i could try if needed
TECH Apprentice
Joined: Feb 2009
Posts: 365
Likes: 0
From: A DEN
ok i changed the pump and at idle i think its around 40 to 41 psi, then if i goose it any it jumps up to 44 or 45 i think. kinda hard to tell, and i dont know how acurate my mounted guage is. if this isnt right should i change the regulator next? i have a used one here i could try if needed
Car should scream on the spray. Ask me how I know
This is a good thread for me also. I had a problem at my dyno and I am wondering also if the fuel pump was bad would it just be bad all the time? Or intermentently? Your Lobe separation for your cam is more spec'd for N/A in my opinion but nitrous loves duration and you got more compression than I do.
Car should scream on the spray. Ask me how I know
This is a good thread for me also. I had a problem at my dyno and I am wondering also if the fuel pump was bad would it just be bad all the time? Or intermentently? Your Lobe separation for your cam is more spec'd for N/A in my opinion but nitrous loves duration and you got more compression than I do.
This is a good thread for me also. I had a problem at my dyno and I am wondering also if the fuel pump was bad would it just be bad all the time? Or intermentently? Your Lobe separation for your cam is more spec'd for N/A in my opinion but nitrous loves duration and you got more compression than I do.
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I would put a real fuel pressure gauge on the fuel service port on the back of the intake/fuel line. Then drive your car and check psi at WOT and just cruising around. But also stay in it for a bit at WOT and see what its at!
i had an extra fuel pressure regulator layin around and decided to change it out and it fixed it, not pressure spike or drop wat so ever. but im glad i went ahead and did the racetronix kit for peace of mind.
thanks man, i ordered a wideband and it should be here wednesday or thursday. i should be looking for 12.8 at wot right? could that really cause the car to be so low on power? cause at the dyno i said i was shooting for atleast 400rwhp and they said that would be enough power to run low 10s hight nines on there dyno. is there anyway that thing is just rediculously stingy? it looked like a pretty cheap setup to me.
thanks man, i ordered a wideband and it should be here wednesday or thursday. i should be looking for 12.8 at wot right? could that really cause the car to be so low on power? cause at the dyno i said i was shooting for atleast 400rwhp and they said that would be enough power to run low 10s hight nines on there dyno. is there anyway that thing is just rediculously stingy? it looked like a pretty cheap setup to me.
kalebm22, your guys at the dyno don't know much, do they? thats what i couldnt figure out is how they thought that lol unless the dyno was just so out of calibration. but they have a car that runs 8.80s at our local dragstrip and a truck taht runs low 10s. but i was just about pissed wen i saw the numbers on the screen lol. i know this thing is putting down more than 310 by the way it runs, but i need to try it on another dyno if i can find one around here
If they have a high 8 second and low 10 second cars they should have a clue. I would like to see what either of their cars would put down on their dyno??
If there is any other place in the area go there instead. If not, welll goodluck sir.
If there is any other place in the area go there instead. If not, welll goodluck sir.
TECH Apprentice
Joined: Feb 2009
Posts: 365
Likes: 0
From: A DEN
thats what i couldnt figure out is how they thought that lol unless the dyno was just so out of calibration. but they have a car that runs 8.80s at our local dragstrip and a truck taht runs low 10s. but i was just about pissed wen i saw the numbers on the screen lol. i know this thing is putting down more than 310 by the way it runs, but i need to try it on another dyno if i can find one around here
Look Kalebm I am gonna throw the best piece of advice out there for you.
With just 1 name
MOE BAILEY. He is the best LT1 tuner period.
I would pay the guys plane ticket out there and pay him to tune the car. There is a reason he travels the US to tune cars. He picked up 70rwhp on a base tune on my car. I do not know if he would travel to Missourri but you could ask him. It sounds to me like the guys helping you do not know much about your car.
