WI only at 220HP???
#1
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WI only at 220HP???
Current setup:
T25/28 at 12-15 PSI (approx 220 HP)
Link ECU
IC that came with FM3 kit
DO WI kit
I would like to remove the weight of the IC (anyone know how much it weighs?) and gain a little throttle response in the process. I think it would work with just WI but I am a little worried about potential problems caused by the pulsations with my pump (see old thread below). Anyone have any comments before I rip this bitch up?
Old pump pulsation thread:
https://www.miataturbo.net/forums/showthread.php?t=8034
T25/28 at 12-15 PSI (approx 220 HP)
Link ECU
IC that came with FM3 kit
DO WI kit
I would like to remove the weight of the IC (anyone know how much it weighs?) and gain a little throttle response in the process. I think it would work with just WI but I am a little worried about potential problems caused by the pulsations with my pump (see old thread below). Anyone have any comments before I rip this bitch up?
Old pump pulsation thread:
https://www.miataturbo.net/forums/showthread.php?t=8034
#3
Yep you wont loose alot of wieght but you will make more hp. You run the same pump i do Rob. I say make a temp crossover and try it. If it works for me and others it should work for you. If with just the WI in place on a improvised crossover and the IC still hanging there feels acceptable after you tweak the fuel etc abit. Then remove the IC and drive abit with just the WI. FWIW my 1.5 gallons lasted like 30 or so minutes+ with only 1 nozzle. I use a whole friggin lot now that i use 2 but sub 12-13 psi 1 should work just fine for you.
#4
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I have both WI and IC on the car now so I would be losing weight. I had no idea that Magma was using that much water but that must be on the track or something. I wouldn't see why I would use more water than I do now (1 gallon every 6 months <G>) so it shouldn't be a problem.
#5
I have both WI and IC on the car now so I would be losing weight. I had no idea that Magma was using that much water but that must be on the track or something. I wouldn't see why I would use more water than I do now (1 gallon every 6 months <G>) so it shouldn't be a problem.
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Robert, I think Emilio over at M.net played with a WI only setup on his '99 turbo car. You might drop him a line and see what he has to say about it. He was looking for increased throttle respose as well.
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But, I still think that the drop in intake volume and weight would be worth it. It couldn't hurt!
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1.5 gal of water in 30 minutes (1 nozzle) per your other post means (just guessing) 1.5 gal of water in 20 minutes. If you are driving 120 MPH you will cover 40 miles during that 20 minutes. At 10 MPG that means you are buring up 4 gals of gas. So, you are running a 3:1 ratio (gas:water)? Yeah, my numbers are way off but I'm just trying to figure out what kind of ratio you are using. I thought much more than 10:1 and you were wasting water/power. Where am I going wrong?
#12
Nope i use 25% or so. 1 nozzle hits 250 or so cc/min wich is 3.9 gph and my 2nd stage is 200 or so cc/min at the pressure i run at of 95-100 psi 3.15 gph totall of 7 or so gph. I have hit 80 or so% DC on my 550's and i hit 97-100% on my 460's at 14 psi before. So figure 27-28 gph of fuel and 7 gph water gives us 25%
Most IC setups run 10% at most becouse there AIT's are a good bit lower. I on the other hand am staring at 230+ degree pre WI temps most likely.
Most IC setups run 10% at most becouse there AIT's are a good bit lower. I on the other hand am staring at 230+ degree pre WI temps most likely.
#14
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(night shift is slowly killing me!)
#16
I tried running ICless, but found that at around 11psi i either had to start pulling timing or i was adding so much water it fooooked the performance.
At 9psi the WI only system worked great, but when the ambient temps reached over 30c i had to start adding over 15% water and noticed the performance drop off.
I leaned out the AFR's but then needed to add water again, no amount of balancing could claw back the lost performance, and anything over 20% caused spluttering.
In the end i took the water % back and knocked 4 degrees off the timing and fitted a IC, now with the IC and WI i'm able to run the stock ECU's timing curve at 14btdc through 46c+ weather no worries
Cheers
Mark
At 9psi the WI only system worked great, but when the ambient temps reached over 30c i had to start adding over 15% water and noticed the performance drop off.
I leaned out the AFR's but then needed to add water again, no amount of balancing could claw back the lost performance, and anything over 20% caused spluttering.
In the end i took the water % back and knocked 4 degrees off the timing and fitted a IC, now with the IC and WI i'm able to run the stock ECU's timing curve at 14btdc through 46c+ weather no worries
Cheers
Mark
#17
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He assumed you have a bar&plate IC i believe like most of us on the forum. He was referring to you using a tube and fin ic replacement to drop some weight because the bar and plate would be much heavier than the tube and fin.
So is your current IC tube and fin or bar-n-plate?
So is your current IC tube and fin or bar-n-plate?
#19
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I wish I could go to the dyno, get a good tune. Yank the bitch out (IC) and tune again to see the results. Of course, there isn't a good dyno operator within 300 miles of Charleston, SC so I guess I will just have to live with my shitty tune...
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