PPE Headers
03-30-11, 09:20 AM
#61
Lou,
How does it drive, what does the SOP acceleration tell you about the headers, do you notice an increase in valve train noise? Often it is common to pick up an increase in valve train noise due to the thin wall headers transmitting the sound easier.
Gary
How does it drive, what does the SOP acceleration tell you about the headers, do you notice an increase in valve train noise? Often it is common to pick up an increase in valve train noise due to the thin wall headers transmitting the sound easier.
Gary
Last edited by hwy1isf; 03-30-11 at 01:39 PM.
03-30-11, 04:56 PM
#63
OK Good People Thanks for being patient. The cat install is complete. The dyno was run, copy attached. But the news is not all good. I have a cel, not because of the cats, but because the heater circuit for the front 02 sensors is not working. During the install PPE installs a wire harness extension, apparently something in that line was not installed correctly. PPE will be working on that tomorrow. I was expecting more on the dyno, but comparing it with caymandive, I did OK. My modified exhaust stayed the same, except for the addition of the cats just behind each header. The cats are Magnaflow Hi-Flow Spun cats with a 3" body, pict attached.
As can be seen, caymandive's curve showed 386 HP with 363 lb ft of torque max. His run was with a JoeZ Intake, JoeZ exhaust and no cats. My run on a day with relatively the same temperature showed 382 HP and 367 lb ft of torque. And again, I am running a Takeda intake, modified dual exhaust that utilizes the stock mufflers, glasspack resonators with an X pipe. And as indicated above I have added the magnaflow cats. I gained over 27HP and better than 24 lb ft of torque.
As can be seen, caymandive's curve showed 386 HP with 363 lb ft of torque max. His run was with a JoeZ Intake, JoeZ exhaust and no cats. My run on a day with relatively the same temperature showed 382 HP and 367 lb ft of torque. And again, I am running a Takeda intake, modified dual exhaust that utilizes the stock mufflers, glasspack resonators with an X pipe. And as indicated above I have added the magnaflow cats. I gained over 27HP and better than 24 lb ft of torque.
Last edited by flowrider; 03-30-11 at 05:24 PM.
03-30-11, 05:29 PM
#65
OK Good People Thanks for being patient. The cat install is complete. The dyno was run, copy attached. But the news is not all good. I have a cel, not because of the cats, but because the heater circuit for the front 02 sensors is not working. During the install PPE installs a wire harness extension, apparently something in that line was not installed correctly. PPE will be working on that tomorrow. I was expecting more on the dyno, but comparing it with caymandive, I did OK. My modified exhaust stayed the same, except for the addition of the cats just behind each header. The cats are Magnaflow Hi-Flow Spun cats with a 3" body, pict attached.
As can be seen, caymandive's curve showed 386 HP with 363 lb ft of torque max. His run was with a JoeZ Intake, JoeZ exhaust and no cats. My run on a day with relatively the same temperature showed 382 HP and 367 lb ft of torque. And again, I am running a Takeda intake, modified dual exhaust that utilizes the stock mufflers, glasspack resonators with an X pipe. And as indicated above I have added the magnaflow cats. I gained over 27HP and better than 24 lb ft of torque.
As can be seen, caymandive's curve showed 386 HP with 363 lb ft of torque max. His run was with a JoeZ Intake, JoeZ exhaust and no cats. My run on a day with relatively the same temperature showed 382 HP and 367 lb ft of torque. And again, I am running a Takeda intake, modified dual exhaust that utilizes the stock mufflers, glasspack resonators with an X pipe. And as indicated above I have added the magnaflow cats. I gained over 27HP and better than 24 lb ft of torque.
04-01-11, 10:42 AM
#74
Sounds like there is some guessing going on here. What codes specifically are you getting? The OBDII has quite a few checks & balances upon startup and having both sensors fail at the same time seems unlikely. I would bet that the CEL is coming on because the car has not been "tricked" enough into believing the primary cats are still in place and functioning as they should.
04-01-11, 10:53 AM
#75
^^^^Thank you James for your input. You're knowledge is always appreciated
I don't know what the codes are. I have enough faith in PPE to believe what they are saying. The cel is instantaneous upon startup, a cat failure takes a little time to show a cel. Voltage readings have been taken and show that voltage is getting to the sensors, but the voltage across the sensors is low. Again, I trust PPE. This is not their first foray into Lexus header development, IMHO they know what they are doing.
Lou
I don't know what the codes are. I have enough faith in PPE to believe what they are saying. The cel is instantaneous upon startup, a cat failure takes a little time to show a cel. Voltage readings have been taken and show that voltage is getting to the sensors, but the voltage across the sensors is low. Again, I trust PPE. This is not their first foray into Lexus header development, IMHO they know what they are doing.
Lou