absolute most power on pump gas? max boost or a small shot?
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single digit dreamer
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From: omaha ne
absolute most power on pump gas? max boost or a small shot? i am looking to absolutly maximize my pump gas hp. i can not use alkey injecton but i can use nitrous or water injection. i just sent in my application to the hotrod pump gas drags and am geting ahead of myself i know but thats how i am. the fuel is 93octane
i have some plans, better flowing header and exhaust are on top of my list but other than that i think i need to maximize my tune.
i have made about 30gtech runs in the last few days and figured out a prety good mix of boost/fuel and timing to get 0KR and nice power. now i am looking at tosing nitrous into the mix too. would pulling 1lb of boost and running a 35shot give me more knock free power or is boost only the way to fly. this will be a dry shot with the injectors adding the extra fuel. anyone have any experience or oponions here.
i have some plans, better flowing header and exhaust are on top of my list but other than that i think i need to maximize my tune.
i have made about 30gtech runs in the last few days and figured out a prety good mix of boost/fuel and timing to get 0KR and nice power. now i am looking at tosing nitrous into the mix too. would pulling 1lb of boost and running a 35shot give me more knock free power or is boost only the way to fly. this will be a dry shot with the injectors adding the extra fuel. anyone have any experience or oponions here.
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single digit dreamer
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From: omaha ne
Originally Posted by 860 Performance
I have lots of exp with N20 & boost, check out the sig.
I love the combo, go for it.
I love the combo, go for it.
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single digit dreamer
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From: omaha ne
Originally Posted by MIGHTYMOUSE
you need to get rid of all that exhaust backpressure.. that is really going to help against detonation
with that i think i will need bigger injectors and i think i am going to try some alcohol injection too but i can't use that at the pump gas drags if they happen to invite me.
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FormerVendor
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From: WWW.SPEEDINC.COM
Other than endless drivetrain related variables, it would help if you had something that was a few thousand pounds lighter.
Also, I would test with the fuel they use (rocket brand), rather than your local pump 93.
Also, I would test with the fuel they use (rocket brand), rather than your local pump 93.
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single digit dreamer
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From: omaha ne
Originally Posted by INTMD8
Other than endless drivetrain related variables, it would help if you had something that was a few thousand pounds lighter.
Also, I would test with the fuel they use (rocket brand), rather than your local pump 93.
Also, I would test with the fuel they use (rocket brand), rather than your local pump 93.
I could be looking at this wrong, but I think if it were me, I would switch to a wet shot, maybe 100-125 if the motor will take it maybe even on a progressive controller. If you take the dry shot out of the equation, you have less variables. You don't have to count on the MAF to adjust fuel. W/ boost being progressive, it sounds like a nightmare to tune. Use the wet shot, then your turbo tune would be a constant dependent on MAP, and you'll tune the n2o a little rich w/ jets. Seems to me like the sky's the limit...or the bank account. I plan on a similar set up next year. Big single turbo and a wet shot. Good luck getting in the drags!!
I have no experience with this, just a little brainstorming.
I have no experience with this, just a little brainstorming.
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single digit dreamer
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From: omaha ne
i dont use the maf for anything. i will probably pull it out soon. megasquirt has the ability to add fuel for nitrous. you just tell it how much fuel to add with the injectors. seems like a killer set up to me.
I forgot, Chris did tell me you were running the megasquirt. I think I would still run the n2o independently. I don't know much about the megasquirt, but it seems like you would have to run the n2o all the time or constantly change programming. I'm assuming you're using 2 or 3 bar MAP to tune from. Since there are no sensors picking up the n2o I don't see how the computer will adjust for it and know if it's there or not. Good luck w/ it Parish! Hopefully we'll make another trip out to Omaha this year and see the truck in action!
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single digit dreamer
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From: omaha ne
mega kicks *** man. it has a nitrous output and input. it works like this.
built in window switch, coolant temp switch, map switch. so you can select exactly when you want the nitrous output to come on.
then once the nitrous comes on you return a nitrous input signal to the mega and at that point it will add fuel. you can have it switch over to a 2nd ve table and timing table or just have it add a specified amount of fuel, something like in interpolated amount of pulse width added based on rpm.
built in window switch, coolant temp switch, map switch. so you can select exactly when you want the nitrous output to come on.
then once the nitrous comes on you return a nitrous input signal to the mega and at that point it will add fuel. you can have it switch over to a 2nd ve table and timing table or just have it add a specified amount of fuel, something like in interpolated amount of pulse width added based on rpm.
Originally Posted by parish8
mega kicks *** man. it has a nitrous output and input. it works like this.
built in window switch, coolant temp switch, map switch. so you can select exactly when you want the nitrous output to come on.
then once the nitrous comes on you return a nitrous input signal to the mega and at that point it will add fuel. you can have it switch over to a 2nd ve table and timing table or just have it add a specified amount of fuel, something like in interpolated amount of pulse width added based on rpm.
built in window switch, coolant temp switch, map switch. so you can select exactly when you want the nitrous output to come on.
then once the nitrous comes on you return a nitrous input signal to the mega and at that point it will add fuel. you can have it switch over to a 2nd ve table and timing table or just have it add a specified amount of fuel, something like in interpolated amount of pulse width added based on rpm.
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single digit dreamer
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From: omaha ne
Originally Posted by Yellowsierra
Paris how much compression does your motor have? It seems to me you could run more timing or more boost before you see kr but I guess you would know sence you have all the equipment.
If you are looking for max HP the combo seems to work well.
One thing that I don't like about it is (on my set-up anyway), is that my supercharger, all of the plumbing, belt, and brackets add up to a lot of weight in front of the front wheels. I truly beieve that I could probably turn a quicker e.t if I switched to just nitrous, because of the weight savings.
I also run the dry shot through my Accel DFI and love it, its real easy to tune plus no lean spike upon activation.
i know my set-up is a little different than yours, but just throwing it out there.
One thing that I don't like about it is (on my set-up anyway), is that my supercharger, all of the plumbing, belt, and brackets add up to a lot of weight in front of the front wheels. I truly beieve that I could probably turn a quicker e.t if I switched to just nitrous, because of the weight savings.
I also run the dry shot through my Accel DFI and love it, its real easy to tune plus no lean spike upon activation.
i know my set-up is a little different than yours, but just throwing it out there.
8.8-1 compression could hold alot of boost but it really depends one the Heads,Cam,Turbo size,inlet temp, and of course exhaust backpressure.
For comparison we run a 9.5-1 compression 346 with patriot heads,226cam and STS T70 at 14lbs of boost on pump gas.I run lower timing than people post here,so maybe that is the trick. I know my GN loves the timing low and rich A/F to help it spool faster.18lbs on the street
For comparison we run a 9.5-1 compression 346 with patriot heads,226cam and STS T70 at 14lbs of boost on pump gas.I run lower timing than people post here,so maybe that is the trick. I know my GN loves the timing low and rich A/F to help it spool faster.18lbs on the street
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single digit dreamer
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From: omaha ne
Originally Posted by Slowhawk
8.8-1 compression could hold alot of boost but it really depends one the Heads,Cam,Turbo size,inlet temp, and of course exhaust backpressure.
For comparison we run a 9.5-1 compression 346 with patriot heads,226cam and STS T70 at 14lbs of boost on pump gas.I run lower timing than people post here,so maybe that is the trick. I know my GN loves the timing low and rich A/F to help it spool faster.18lbs on the street
For comparison we run a 9.5-1 compression 346 with patriot heads,226cam and STS T70 at 14lbs of boost on pump gas.I run lower timing than people post here,so maybe that is the trick. I know my GN loves the timing low and rich A/F to help it spool faster.18lbs on the street
i expect the new header,down pipe and exhaust to help a lot.
Originally Posted by parish8
you run 14psi on pump with no alcohol? how much timing?
i expect the new header,down pipe and exhaust to help a lot.
i expect the new header,down pipe and exhaust to help a lot.
Also tried higher timing but it spooled slow and didn't make any more power but did KR alittle.
Only 93 octain pump gas,street driven/tuned