GT4202 29psi freeway test
Just finished taking a customers car from a previous tune of 21psi and taking it up to 29psi on pump gas (Shell 93). The car is a blast, in the 70-135mph vid it breaks traction from 83 to 100mph then shifts in to 4th at 106. The car is running a AEM and gets in between 25-28 mpg when not totally raging on it. The current tune on the car has about 20hrs in to making very driver friendly and smooth. It also has a multi stage water injection controlled by the AEM. The Vid is in HD so play it on a fast connection/computer or it will glitch.
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Sounds beautiful Congrats on the Pump fuel WI tune.
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Thanks, especially from you. Ever since I did my T88 at 28psi a few years back and raced it every weekend with out a hiccup, its the only way I will tune on high boost pump gas.
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once you get it right you unlock the world of potential for reliable High HP rotaries.
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No doubt, with the proper recipe these motors can make ridiculous power on pump gas. My favorite thing to do is pick on crotch rockets who are then in disbelief when you pull away from there liter bikes.
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Wow thats awesome! I would love to see some in cars footage. I would also love to use one of those turbos on either of my rotaries but I'm not prepared to put up with the downsides :(
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your a bloody chicken. get over your crap turbos and get something serious for once.
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You guys need to pick up some vboxes so we can all compare highway speeds. 60-130 etc..
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Ya I agree. No turning back once you add some water injection. I'm still down at 22 psi and pull in bikes. They have no idea how to respond.
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Very badass
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Originally Posted by kevinbtz
(Post 11490622)
Just finished taking a customers car from a previous tune of 21psi and taking it up to 29psi on pump gas (Shell 93). The car is a blast, in the 70-135mph vid it breaks traction from 83 to 100mph then shifts in to 4th at 106. The car is running a AEM and gets in between 25-28 mpg when not totally raging on it. The current tune on the car has about 20hrs in to making very driver friendly and smooth. It also has a multi stage water injection controlled by the AEM. The Vid is in HD so play it on a fast connection/computer or it will glitch.
1994 RX7 Highway Rolls Stupid Fast! ! ! - YouTube I am presently at a little over 500hp but cant say that I have fully experienced these conditions since I have far surpassed the ratings of my clutch. |
Nice going man love them pulls
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Originally Posted by jetlude
(Post 11491914)
Great video, however, I am very curious to know how the FD feels as it looses traction at the rear at 80 - 100mph. Does it tend to fishtail like it does in second, or is it more stable . I know there are several variables that can influence this such as tire with and suspension setup. I am assuming that you guys are running stock suspension.
I am presently at a little over 500hp but cant say that I have fully experienced these conditions since I have far surpassed the ratings of my clutch. I would guess it would more depend on how much power and what tires like you mentioned above. Mine is unstable when it hits at 36psi on street tires in 4th gear. Will only try it again on drag tires. It's crazy to see cars pushing 93 octane so far.. Congrats on the results. |
Originally Posted by jetlude
(Post 11491914)
Great video, however, I am very curious to know how the FD feels as it looses traction at the rear at 80 - 100mph. Does it tend to fishtail like it does in second, or is it more stable . I know there are several variables that can influence this such as tire with and suspension setup. I am assuming that you guys are running stock suspension.
I am presently at a little over 500hp but cant say that I have fully experienced these conditions since I have far surpassed the ratings of my clutch. |
Also, thank you for the complements guys.
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Wow. Wouldn't mind seeing an in-car either. Great sound. Congrats on the tune. Any pics of the car? Love them in white.
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I never would of thought that running just aux injection would be enough to boost 25+psi. People always told me aux injection is only good till 21-23psi and from there you would need race gas.
You obviously have success with 29psi. Car is running solid! |
Originally Posted by ArmenMAxx
(Post 11492700)
I never would of thought that running just aux injection would be enough to boost 25+psi. People always told me aux injection is only good till 21-23psi and from there you would need race gas.
You obviously have success with 29psi. Car is running solid! Pump fuel Water injection 34psi 703rwhp |
How much water are you guys putting in at those boost levels?
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Originally Posted by rx72c
(Post 11493004)
I did this years ago now.
Pump fuel Water injection 34psi 703rwhp was it pre-turbo injection? and as ^ mentioned, how much water were you using? |
Originally Posted by ArmenMAxx
(Post 11492700)
I never would of thought that running just aux injection would be enough to boost 25+psi. People always told me aux injection is only good till 21-23psi and from there you would need race gas.
You obviously have success with 29psi. Car is running solid! |
i have a hard time believing that thing gets anywhere near 28mpg cruising. what kind of advance and afr are you running at cruise? and what MPH?
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Originally Posted by Barban
(Post 11493652)
It's not generally considered safe. 23ish psi is the supposed limit for WI. After than you're on to meth and/or race fuel.
Like rx72c I have a high boost pre turbo WI setup 93 pump petrol 38psi 740rwhp BW475 TII engine/intake On 40psi the car has trapped 156mph on the 1/4 mile. I don't think there would be much more hp to be made on E85 with this setup. I know which is easier to run! Great vid by the OP! |
Originally Posted by JZG
(Post 11494038)
Not true.
Like rx72c I have a high boost pre turbo WI setup 93 pump petrol 38psi 740rwhp BW475 TII engine/intake On 40psi the car has trapped 156mph on the 1/4 mile. I don't think there would be much more hp to be made on E85 with this setup. I know which is easier to run! Great vid by the OP! |
Originally Posted by jacobcartmill
(Post 11493884)
i have a hard time believing that thing gets anywhere near 28mpg cruising. what kind of advance and afr are you running at cruise? and what MPH?
Also to the other question, I am running distilled water only in the pre turbo and pre TB locations. |
He'll I've heard of people running 25-30 psi on just straight pump gas (93 ) on a carbed setup which I thought was absolute bonkers, apparently it's all in the tuning , ESP the timing map
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Originally Posted by kevinbtz
(Post 11494744)
Also to the other question, I am running distilled water only in the pre turbo and pre TB locations. |
156 traps on 93 and water...... Vids please.
Originally Posted by JZG
(Post 11494038)
Not true.
Like rx72c I have a high boost pre turbo WI setup 93 pump petrol 38psi 740rwhp BW475 TII engine/intake On 40psi the car has trapped 156mph on the 1/4 mile. I don't think there would be much more hp to be made on E85 with this setup. I know which is easier to run! Great vid by the OP! |
No vid of 156mph pass that I know of but here's a slower one. Best ET to date 8.86@155mph.
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^thats awesome man! Sweet 323
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Originally Posted by JZG
(Post 11496578)
No vid of 156mph pass that I know of but here's a slower one. Best ET to date 8.86@155mph.
Green Brothers Racing 323 wagon 9.1@ 153 Dragmasters 2013 - YouTube |
do keep in mind the car is approx 2300 pounds... this is not to take anything away from the Green Brothers performance. i, too, think they have not only have they gone really fast and but they have shared a lot of the details on our board.
i was especially interested to learn about their tuning process. if you are not familiar w them look for their threads/posts. good stuff. howard |
Originally Posted by smg944
(Post 11491351)
You guys need to pick up some vboxes so we can all compare highway speeds. 60-130 etc..
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Originally Posted by drftinmx6
(Post 11494976)
He'll I've heard of people running 25-30 psi on just straight pump gas (93 ) on a carbed setup which I thought was absolute bonkers, apparently it's all in the tuning , ESP the timing map
your asking for trouble right there |
You and Rice are outliers, in terms of what you are willing to push on WI.
While impressive, your example is not representative of the general case for water injection.
Originally Posted by JZG
(Post 11494038)
Not true.
Like rx72c I have a high boost pre turbo WI setup 93 pump petrol 38psi 740rwhp BW475 TII engine/intake On 40psi the car has trapped 156mph on the 1/4 mile. I don't think there would be much more hp to be made on E85 with this setup. I know which is easier to run! Great vid by the OP! |
Originally Posted by Barban
(Post 11497792)
You and Rice are outliers, in terms of what you are willing to push on WI.
While impressive, your example is not representative of the general case for water injection. Not arguing what you are saying, but I am intrigued if others have attempted to follow the lead and have failed. |
goes very well :)
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Has anyone answered how much water is being injected?
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About 1300 or 1400cc at 20psi from memory.
Yep, car is 2400lbs in street/race trim |
Originally Posted by JZG
(Post 11499787)
About 1300 or 1400cc at 20psi from memory.
Yep, car is 2400lbs in street/race trim |
Takes off like a mf...
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Originally Posted by kevinbtz
(Post 11494744)
Also to the other question, I am running distilled water only in the pre turbo and pre TB locations.
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Originally Posted by Bwarrrrrp
(Post 11500302)
does a couple ppm of additives make much difference? How pure is the distilled water?
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Originally Posted by KNONFS
(Post 11497918)
What do you mean? Are there others that have attempted to run pre turbo WI at "extreme" pressures on pump gas, without any success?
Not arguing what you are saying, but I am intrigued if others have attempted to follow the lead and have failed. The general population tends to trend behind the bleeding edge. Moreover, most of the cars here are pure street cars. Most members don't have the time/money/expertise/tuning-ability that rice and others have. Most people pushing anything higher than low to mid 20psi are going to be running meth and/or race fuel. 30-40psi on pump w/ straight water injection possible? Sure. Suggested for your average consumer? Absolutely not. Most people can't push that much boost on anything reliably. Period. It takes a lot more than some water injection to run that much boost. That's the point I'm trying to convey. |
I agree. Peter and I have talked lots over the years and set up my car the way he recommended. I Ran 35psi last fall with about 1200cc's between pre turbo injection and a nozzle at the Tb elbow. Its very tedious when tuning and no room for error especially with the fd's weak spots in the rotors.
But spinning 5th gear easing into boost at 40mph is nothing to brag about ITS SCARY! But I just had to do it once.
Originally Posted by Barban
(Post 11500480)
Plenty of people have tried to do what Rice and JBZ(and this particular car) are doing and failed, not because the theory is flawed but because the execution is difficult and the consequences are grave.
The general population tends to trend behind the bleeding edge. Moreover, most of the cars here are pure street cars. Most members don't have the time/money/expertise/tuning-ability that rice and others have. Most people pushing anything higher than low to mid 20psi are going to be running meth and/or race fuel. 30-40psi on pump w/ straight water injection possible? Sure. Suggested for your average consumer? Absolutely not. Most people can't push that much boost on anything reliably. Period. It takes a lot more than some water injection to run that much boost. That's the point I'm trying to convey. |
^^ you did that on your precision turbo?
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Holy rocket ship
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I do not run distilled water.
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Originally Posted by Barban
(Post 11500480)
Plenty of people have tried to do what Rice and JBZ(and this particular car) are doing and failed, not because the theory is flawed but because the execution is difficult and the consequences are grave.
The general population tends to trend behind the bleeding edge. Moreover, most of the cars here are pure street cars. Most members don't have the time/money/expertise/tuning-ability that rice and others have. Most people pushing anything higher than low to mid 20psi are going to be running meth and/or race fuel. 30-40psi on pump w/ straight water injection possible? Sure. Suggested for your average consumer? Absolutely not. Most people can't push that much boost on anything reliably. Period. It takes a lot more than some water injection to run that much boost. That's the point I'm trying to convey. |
Originally Posted by rx72c
(Post 11515105)
I do not run distilled water.
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