My FRS Project *Now boosted* Pg 2
01-22-2014, 06:42 AM
#61
Originally Posted by rob-2' timestamp='1390231378' post='22973925
[quote name='SlowTeg' timestamp='1389969451' post='22970041']
Nice build.. These cars are going to be the second coming of the Miata (in terms of track cars) at this rate. Picking one up used years from now and boosting it will be very popular I imagine.
Nice build.. These cars are going to be the second coming of the Miata (in terms of track cars) at this rate. Picking one up used years from now and boosting it will be very popular I imagine.
Local guy is on his 3rd motor and Subi said that was the last one they'd replace for him. Stock tune.
OP look into the super charging of these cars and how they'll dyno well and then blow up on the street. I hope you're doing a lot of safety upgrades. The injectors seem to fail and even the ECU update mid season last year didn't stop it.
[/quote]
On a turbos I understand the EJ failures and the reasoning behind it. Howver on an NA tune I don't.
A stock NA motor shouldn't fail at the track. Also interertingly the whp will start off around 160hp and after a session drop to around 130. Suggesting the motor is pulling timing.
If you come off the stock map and have a failure you have no warranty. Same problem I had with my legacy GT. What's really the point if a bad tune leads to failure but a new tune removes your warranty?
Subi may also claim abuse and get out if the warranty
01-22-2014, 02:50 PM
#63
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The negative facts just keep adding up with this car!
Do people know what's triggering it to pull timing? Oil pressure/temp, water temp, knock, AVE fuel trims? That would really suck if there's a logrithm function built in which counts or averages the rev count over a period of time and starts pulling timing when it exceeds a count or average. It's probably temp, knock or fuel trim based though.
Do people know what's triggering it to pull timing? Oil pressure/temp, water temp, knock, AVE fuel trims? That would really suck if there's a logrithm function built in which counts or averages the rev count over a period of time and starts pulling timing when it exceeds a count or average. It's probably temp, knock or fuel trim based though.
01-22-2014, 04:49 PM
#64
The negative facts just keep adding up with this car!
Do people know what's triggering it to pull timing? Oil pressure/temp, water temp, knock, AVE fuel trims? That would really suck if there's a logrithm function built in which counts or averages the rev count over a period of time and starts pulling timing when it exceeds a count or average. It's probably temp, knock or fuel trim based though.
Do people know what's triggering it to pull timing? Oil pressure/temp, water temp, knock, AVE fuel trims? That would really suck if there's a logrithm function built in which counts or averages the rev count over a period of time and starts pulling timing when it exceeds a count or average. It's probably temp, knock or fuel trim based though.
First they blamed the injectors but other companies use the same. And the only reason I know this is a guy I know who tracks a ton was telling me the BRZ guys started to notice slower lap times as the day went on. So they dyno back to back to watch the hp drop. I suspect temp/knock.
Subi should give up on the h and switch to I and V.
Can't wait to hear how the project turns out OP.
01-23-2014, 06:44 AM
#65
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Originally Posted by berny2435' timestamp='1390434632' post='22978576
The negative facts just keep adding up with this car!
Do people know what's triggering it to pull timing? Oil pressure/temp, water temp, knock, AVE fuel trims? That would really suck if there's a logrithm function built in which counts or averages the rev count over a period of time and starts pulling timing when it exceeds a count or average. It's probably temp, knock or fuel trim based though.
Do people know what's triggering it to pull timing? Oil pressure/temp, water temp, knock, AVE fuel trims? That would really suck if there's a logrithm function built in which counts or averages the rev count over a period of time and starts pulling timing when it exceeds a count or average. It's probably temp, knock or fuel trim based though.
First they blamed the injectors but other companies use the same. And the only reason I know this is a guy I know who tracks a ton was telling me the BRZ guys started to notice slower lap times as the day went on. So they dyno back to back to watch the hp drop. I suspect temp/knock.
Subi should give up on the h and switch to I and V.
Can't wait to hear how the project turns out OP.
01-23-2014, 08:33 AM
#66
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Mostly high oil temps. This car is reminding me of when the 370z's came out. These FRS/BRZ's seem to suffer very high oil temps, especially when tracked. Perrin even did a test on the dyno and started noticing power dropping off after many pulls due to oil temps. I have since upgraded the radiator, and will be running an oil cooler as well. I wouldn't force induct these cars without one. And so far, I have had zero issues with this car, and I am by no means nice to it. There are plenty running around with 400-500whp and 20-30k hard miles without issues.
I do truely wish you the best of luck with the setup. All those pipes spaghetti wrapped around the motor makes for a spicy hot meatball of metal.
How many quarts of oil are you going to be able to hold with that new oil pan and oil cooler setup?
Did you alter the sump pickup pipe at all?
Make sure you allow enough time for that oil to heat up!
Honda had a few good ideas about heat switching from the B series to the K series layout. They could have just kept on with the B layout running hot pipes under the oil pan but I think they were spot on when going to the K layout.
I would have pre-ordered a FRS if it was a K20 turbo!
01-23-2014, 09:49 AM
#67
Psychoasian fully explained it in another thread, but the gist of it is that the factory tune injects the wrong amount of fuel during a particular type of throttle transition. I can't remember the transition, but something like going from full throttle to partial throttle and back to full, and the ECU references a fuel map that says inject X when it should really be injecting 150% of X. As such, it runs lean and you get detonation.
But the main point is that it is literally a programming issue, not a mechanical issue with the injectors. Quite literally a bad spot in the tuning.
But the main point is that it is literally a programming issue, not a mechanical issue with the injectors. Quite literally a bad spot in the tuning.
01-23-2014, 11:27 AM
#68
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Originally Posted by ian02s2k' timestamp='1390491855' post='22979351
Mostly high oil temps. This car is reminding me of when the 370z's came out. These FRS/BRZ's seem to suffer very high oil temps, especially when tracked. Perrin even did a test on the dyno and started noticing power dropping off after many pulls due to oil temps. I have since upgraded the radiator, and will be running an oil cooler as well. I wouldn't force induct these cars without one. And so far, I have had zero issues with this car, and I am by no means nice to it. There are plenty running around with 400-500whp and 20-30k hard miles without issues.
I do truely wish you the best of luck with the setup. All those pipes spaghetti wrapped around the motor makes for a spicy hot meatball of metal.
How many quarts of oil are you going to be able to hold with that new oil pan and oil cooler setup?
Did you alter the sump pickup pipe at all?
Make sure you allow enough time for that oil to heat up!
Honda had a few good ideas about heat switching from the B series to the K series layout. They could have just kept on with the B layout running hot pipes under the oil pan but I think they were spot on when going to the K layout.
I would have pre-ordered a FRS if it was a K20 turbo!
01-23-2014, 06:37 PM
#69
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