Turbocharging auto RX8
12-16-2007, 10:39 AM
#76
I'll snap his neck.
I know 09Factor has the greddy on his AT, and Phil has the Pettit on his AT. Haven't heard them say anything about this type of problem. What gear were you in? Did you have the DSC turned off? If the DSC was off, maybe you broke the tires loose?
12-16-2007, 11:46 AM
#77
Just Turbo charged my 8 with greddy kit. Had it dyno tuned at 218 HP on wheel. Did a test run on highway. When puch hard at high speed at 5000 RPM it slipped and jump fast to 7000RPM. I think 4AT is just not enough for Trubo. HUmm... will atleast we got another project going (SE3P with FD engine). Also got a FD with TD06 25G.
Car was running lean before tunning. Had upgraded the injectors. Try to upgrade the fuel pump, but did not have the correct tool to remove those plastic rings. Anyone can help on that?
Car was running lean before tunning. Had upgraded the injectors. Try to upgrade the fuel pump, but did not have the correct tool to remove those plastic rings. Anyone can help on that?
12-16-2007, 05:04 PM
#78
Original Turbo 'd Auto !!
Just Turbo charged my 8 with greddy kit. Had it dyno tuned at 218 HP on wheel. Did a test run on highway. When puch hard at high speed at 5000 RPM it slipped and jump fast to 7000RPM. I think 4AT is just not enough for Trubo. HUmm... will atleast we got another project going (SE3P with FD engine). Also got a FD with TD06 25G.
Car was running lean before tunning. Had upgraded the injectors. Try to upgrade the fuel pump, but did not have the correct tool to remove those plastic rings. Anyone can help on that?
Car was running lean before tunning. Had upgraded the injectors. Try to upgrade the fuel pump, but did not have the correct tool to remove those plastic rings. Anyone can help on that?
How fast were you going and what gear? Ok thats 2 questions...
Question #3. did it upshift?
question #4 . was the tranny warmed up?
I have punched it in forth going 85 and it upshifted, but didn't slip to 7k.
85 mph = 3.5 k
just one side note what are your AFR's in boost and non-boost?
12-17-2007, 11:20 AM
#79
Original Turbo 'd Auto !!
another thing to add.
I drove the 8 cold and tried to see if it would slip when the tranny was cold..
I didn't experience what you noted fds777..
How many miles on the tranny fluid and is it the OEM crap?
I drove the 8 cold and tried to see if it would slip when the tranny was cold..
I didn't experience what you noted fds777..
How many miles on the tranny fluid and is it the OEM crap?
12-18-2007, 11:39 AM
#81
I am currently running without an aftercooler so I need be careful on the boost but being interested in your experience I decided that a couple of short boost runs would be OK.
With the tranny fluid at 182 degrees F. on the third try I did develop some slip when I was doing 60 and punched it while in the manual paddle mode. I went out last evening and tried the same in auto mode with the tranny fluid at 182 degrees F. and experienced no slippage or surging.
The only differences are that I am using RP fluid, the X and a s/c - 09Factor is turbo equipped and if he does not have this problem then something else is wrong.
With the tranny fluid at 182 degrees F. on the third try I did develop some slip when I was doing 60 and punched it while in the manual paddle mode. I went out last evening and tried the same in auto mode with the tranny fluid at 182 degrees F. and experienced no slippage or surging.
The only differences are that I am using RP fluid, the X and a s/c - 09Factor is turbo equipped and if he does not have this problem then something else is wrong.
12-18-2007, 08:03 PM
#84
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I am currently running without an aftercooler so I need be careful on the boost but being interested in your experience I decided that a couple of short boost runs would be OK.
With the tranny fluid at 182 degrees F. on the third try I did develop some slip when I was doing 60 and punched it while in the manual paddle mode. I went out last evening and tried the same in auto mode with the tranny fluid at 182 degrees F. and experienced no slippage or surging.
The only differences are that I am using RP fluid, the X and a s/c - 09Factor is turbo equipped and if he does not have this problem then something else is wrong.
With the tranny fluid at 182 degrees F. on the third try I did develop some slip when I was doing 60 and punched it while in the manual paddle mode. I went out last evening and tried the same in auto mode with the tranny fluid at 182 degrees F. and experienced no slippage or surging.
The only differences are that I am using RP fluid, the X and a s/c - 09Factor is turbo equipped and if he does not have this problem then something else is wrong.
12-19-2007, 09:06 PM
#87
I did it in second and third and the slip happened when in third. It was not that bad but it did do it. Since the poster did not say which gear he was in I figured I'd try both.
I do feel that the 4 a/t is stronger than most will give it credit for but as I have said before it will need some help as the hp grows. Ray and I are working on it but way behind schedule.
I do feel that the 4 a/t is stronger than most will give it credit for but as I have said before it will need some help as the hp grows. Ray and I are working on it but way behind schedule.
12-19-2007, 09:22 PM
#88
Thanks. I have tranny cooler on my now. But no gague for the tranny oil temp. Quick question. When the tranny slips, does it give signal to ECU telling it not to pump more fuel? So it won't damage the tranny futher? I'm just guessing. This tranny only have about 12000 miles on it.
We do know that the a/t has interface with the ECU but in my case it did not effect the fuel. We do know that the a/ts will not shift at rpms above 8300 - it does not shut off the gas just will not shift. There is a way to fool it (only to 8700 rpm) but you can be sure that it's hard on it to do so. The a/ts are not something that the "big guns" want to get involved in so it will be up to the owners to figure them out and make them "stronger". If we ever get any upgrades that we care to talk about I'll post it here.
12-20-2007, 10:33 AM
#93
I hate to say this but presently my boost gauge is not performing properly. You have a turbo so I would imagine that boost will be quite different than my s/c. When the gauge was working properly I had a top boost level of 8 psi but there have been several things done to it since then and until I get the gauge fixed who knows.
12-30-2007, 07:47 AM
#95
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My engine light is always on... I think my car is running to rich now. Keep on back firing after giving hard gas. I guess need to bring back to dyno shop re tune. Car now sometime shuts off at idle. =( feel my FD is so much better... not as much problems.
