New injectors, slight issue
05-03-2008, 09:25 AM
#1
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New injectors, slight issue Purchased a set of 30# SVO injectors from New Era. Looking at the flow sheet it says they flow at 34lb/hr@43.5psi. Thats all fine and dandy, so I do the little calculation to 58# with hptuners. That equates to 39lb/hr and the values are inserted into my IRF vs KPA table accordingly. I start the car up and she's running extremely lean at idle. I wind up having to increase my VE table by a decent amount as well as scaling down the IFR table to get the car to 14.7. Any ideas on whether or not I should go back to my IFR table and place the 39# values back in there and then re-tune my VE?
05-03-2008, 10:05 AM
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I did that and they are closer, the thing is. What do they really flow? I am going to toss a dry shot on the car and would like enough headroom for a 150shot. If my IFR table is askew then my duty cycle calculation would be wrong, right?
05-03-2008, 11:01 AM
#4
Purchased a set of 30# SVO injectors from New Era. Looking at the flow sheet it says they flow at 34lb/hr@43.5psi. Thats all fine and dandy, so I do the little calculation to 58# with hptuners. That equates to 39lb/hr and the values are inserted into my IRF vs KPA table accordingly. I start the car up and she's running extremely lean at idle. I wind up having to increase my VE table by a decent amount as well as scaling down the IFR table to get the car to 14.7. Any ideas on whether or not I should go back to my IFR table and place the 39# values back in there and then re-tune my VE?
34.306758 34.52056812 34.73306209 34.94426393 35.15419691 35.36288364 35.57034605 35.77660545 35.98168251 36.18559735 36.38836949 36.59001795 36.79056119 36.99001719 37.18840344 37.38573698 37.58203439
05-03-2008, 11:30 AM
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correct me if i'm wrong but 3 bar is 43.5psi and 4 bar is 58psi? or is it 60
i'm trying to find out about his original information possibly being wrong from his first post, as the sheet might have misinformed him or something was read wrong
i'm trying to find out about his original information possibly being wrong from his first post, as the sheet might have misinformed him or something was read wrong
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05-03-2008, 12:03 PM
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If I had a decent camera I would attach the flow chart to this post, however I almost have my VE table dialed in with the flow rate of 34 in my IFR table as opposed to 39 as I had calculated off of the chart I was given from New Era.
The injectors that I purchased also don't look like the one in the link above. They are entirely red and can be seen on their site. Here is the link to the injectors I am using
The injectors that I purchased also don't look like the one in the link above. They are entirely red and can be seen on their site. Here is the link to the injectors I am using
05-03-2008, 01:03 PM
#9
If I had a decent camera I would attach the flow chart to this post, however I almost have my VE table dialed in with the flow rate of 34 in my IFR table as opposed to 39 as I had calculated off of the chart I was given from New Era.
The injectors that I purchased also don't look like the one in the link above. They are entirely red and can be seen on their site. Here is the link to the injectors I am using
The injectors that I purchased also don't look like the one in the link above. They are entirely red and can be seen on their site. Here is the link to the injectors I am using
These are Bosch Design III injectors, better overall than the older Ford/Bosch 30lb. I haven't seen any flow numbers on these, but would be curious to see them.
Last edited by 405HP_Z06; 05-03-2008 at 04:26 PM.
05-03-2008, 05:50 PM
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I can grab the flow chart out of my car in a little bit and I will post what I was given. As far as the Bosch part number, no I don't know it, nor did I write it down. I can see if I can see the number from the injector on the rail though.
05-04-2008, 08:53 PM
#12
Have you considered performing a MAF only tune, logging BEN vs. MANVAC to dial in your injectors as they flow in your vehicle? This is assuming your MAF is stock of course. I did it to my car since my injectors flow nowhere near what I 'thought' they would and I was able to fine tune the IFR to match the correct flow. Definatley worth a shot.
05-04-2008, 09:49 PM
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You would have to explain the BEN vs MANVAC - assuming the latter is manifold vacuum.
I am now dialed in pretty close using the IFR set for 34lb/hr on an SD tune. I wilil re-enable the MAF this week and tune that so I can finish my nitrous install and get on my way to that!
I am now dialed in pretty close using the IFR set for 34lb/hr on an SD tune. I wilil re-enable the MAF this week and tune that so I can finish my nitrous install and get on my way to that!