250 shot, is direct port needed?
08-31-2011, 08:34 AM
#1
250 shot, is direct port needed? I currently have been sprayin a cheap dry kit on a heads/cam stock bottom end. In the quest to go faster I'm pricing out a built bottom end and would like to spray more. I was thinking 250shot would get me where I want to be. now to the question...
can a normal wet kit say with a plate before the throttle body support a 250shot? or is direct port a must? even if so, is it safer to use a direct port kit for that amount of nitrous? I just dont want to drop $1,500 on some fancy kit if a standard EFI wet kit will do the job.
can a normal wet kit say with a plate before the throttle body support a 250shot? or is direct port a must? even if so, is it safer to use a direct port kit for that amount of nitrous? I just dont want to drop $1,500 on some fancy kit if a standard EFI wet kit will do the job.
08-31-2011, 09:22 AM
#2
Is it needed? No. Is it recommended? Yes.
There are guys that don't have direct ports on their cars and are shooting over 300 on their motors but in doing so takes a great level of knowledge and skill to read the plugs.
A direct port at that level will give you better and easier tunability than a plate
There are guys that don't have direct ports on their cars and are shooting over 300 on their motors but in doing so takes a great level of knowledge and skill to read the plugs.
A direct port at that level will give you better and easier tunability than a plate
09-01-2011, 12:02 PM
#6
I started out on my heads cam motor sprayin 100 shot 5 years ago and the last 2 years i've been on a 200 shot. I'm sure that was maxing out a basic kit. so I figure its time for direct port. I know the basics about nitrous, but I know very little about the direct port set ups.
09-01-2011, 03:34 PM
#7
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I started out on my heads cam motor sprayin 100 shot 5 years ago and the last 2 years i've been on a 200 shot. I'm sure that was maxing out a basic kit. so I figure its time for direct port. I know the basics about nitrous, but I know very little about the direct port set ups.
Any classes the car runs in?
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09-02-2011, 07:50 AM
#8
Dan Bills did a tune for 200 shot dry setup on my current heads/cam motor. He uses Finishline performance's dyno to do the dyno tune part of my tuning in Naperville, IL. you may have seen his new body style gt500 Twin turbo mustang that runs top sportsman before. I'd trust him with my next tune again. the car is not currently raced in any class. If the car doesn't go as fast as I want I may spray up to 350. at that point I will put a direct port kit on it.
09-02-2011, 09:42 AM
#9
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Dan Bills did a tune for 200 shot dry setup on my current heads/cam motor. He uses Finishline performance's dyno to do the dyno tune part of my tuning in Naperville, IL. you may have seen his new body style gt500 Twin turbo mustang that runs top sportsman before. I'd trust him with my next tune again. the car is not currently raced in any class. If the car doesn't go as fast as I want I may spray up to 350. at that point I will put a direct port kit on it.
09-10-2011, 08:43 PM
#10
So i'm sold on direct port. definetly goin this route. now my question for you Grahm is I have a nitrous outlet dry system with a single nozzle into my lid. I got a few bottles and the -4 line is already ran thru the car. can I upgrade my current kit, by adding parts to it? this would make it cheaper on me to go direct port. will my -4 feed line be enough for say 250-300 shot? also I see LS1 cars with one stage direct port with one fuel solenoid and one nitrous solenoid and others have a fuel and nitrous solenoid for each side of the motor. can you explain why and what would I need? 4 solenoids or just 2?
09-10-2011, 10:43 PM
#11
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Direct Port / 2 Stage N20 System Direct Port is safer for the motor because you dont have to worry about some of the cylinders running rich & others running Lean which will damage your engine.
2 Stage N20 System is the way to go. If you spray a 100 shot out of the whole & then spray another 150 shot once you hook good. The car will be faster & it will be much easier on your motor & the engine will last longer.
(4) Solenoids is for a 2 Stage Nitrous system
2 Stage N20 System is the way to go. If you spray a 100 shot out of the whole & then spray another 150 shot once you hook good. The car will be faster & it will be much easier on your motor & the engine will last longer.
(4) Solenoids is for a 2 Stage Nitrous system
09-11-2011, 08:40 AM
#12
Direct Port is safer for the motor because you dont have to worry about some of the cylinders running rich & others running Lean which will damage your engine.
2 Stage N20 System is the way to go. If you spray a 100 shot out of the whole & then spray another 150 shot once you hook good. The car will be faster & it will be much easier on your motor & the engine will last longer.
(4) Solenoids is for a 2 Stage Nitrous system
2 Stage N20 System is the way to go. If you spray a 100 shot out of the whole & then spray another 150 shot once you hook good. The car will be faster & it will be much easier on your motor & the engine will last longer.
(4) Solenoids is for a 2 Stage Nitrous system
Last edited by 87silverbullet; 09-11-2011 at 08:45 AM.
09-13-2011, 09:02 AM
#16
One reason someone may need a 4 solenoid system over a two solenoid system would be due to the intake manifold they have.
For instance if you have a fast intake you can place the distribution block and solenoids on top of the center of the intake. If you had a victor jr with an elbow you would have to use a 4 solenoid system placing one set of distribution blocks and solenoids on one side of the intake and the other pair to feed the other side.
Dave
09-14-2011, 08:02 AM
#17
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I had the NX direct port on my Fast intake. It was the two solenoid setup with the distro block on top of the intake. It made alot of power but was a PITA to change the jets. You can't beat the distribution of the nitrous and fuel with a direct port setup and your chances of backfiring through the intake are drastically reduced.
09-14-2011, 04:40 PM
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I currently have been sprayin a cheap dry kit on a heads/cam stock bottom end. In the quest to go faster I'm pricing out a built bottom end and would like to spray more. I was thinking 250shot would get me where I want to be. now to the question...
can a normal wet kit say with a plate before the throttle body support a 250shot? or is direct port a must? even if so, is it safer to use a direct port kit for that amount of nitrous? I just dont want to drop $1,500 on some fancy kit if a standard EFI wet kit will do the job.
can a normal wet kit say with a plate before the throttle body support a 250shot? or is direct port a must? even if so, is it safer to use a direct port kit for that amount of nitrous? I just dont want to drop $1,500 on some fancy kit if a standard EFI wet kit will do the job.
