FP Red - high psi, low hp - boost leak? wastegate?
there are so many variable as everyone else has said. first inclination would be a boost leak. could also be you bov not being able to hold the boost. what kind do you have? as eric said the milspec cat shouldnt be too much of an issue. i would also check the WG and consider upgrading that as well. but before you go spending money where it is not needed, i would run a boost leak test because it could be something so simple as a leak in one of the pipings. as someone above said, if your close enough to iveytune i would turn to them after the boost leak test to diagnose any other potential problems. gl with you situation and keep us updated on a solution once it is found!
the wastegate acutator does not help you hit higher boost just helps hold it better!
I posted above, but wanted to follow up with other suggestions..
What kind of boost controller are you using and who is doing the tuning? Possibly try adjusting the spring on the oem actuator. Remove the wastegate actuator, a pin and two screws, and then turn the nut on the end to increase/decrease spring load, however, I forget which direction does what.
People with FP Greens often upgrade the wastegate and make 400+awhp.
What kind of boost controller are you using and who is doing the tuning? Possibly try adjusting the spring on the oem actuator. Remove the wastegate actuator, a pin and two screws, and then turn the nut on the end to increase/decrease spring load, however, I forget which direction does what.
People with FP Greens often upgrade the wastegate and make 400+awhp.
So here are so more questions,
1. What is the limit to the FP 18psi wastegate?
2. Will a boost leak test tell me if my bov and or my wastegate is the issue??
3. What's the best bov for this setup? (i could research this but someone just give me some starting ideas)
Thanks for everyone's help.
Last edited by Carloverx; Feb 19, 2010 at 09:23 PM.
well if you stay with meth then 25psi wga
if you want to run just pump then go then go with 18psi wga
the wga psi is what the turbo will run at a minimum, so if you have a bad boost leak and say you are running the 25psi wga then your turbo will do whatever it takes to make that 25psi "minimum wga duty" even if it has to run at 50psi to achieve the 25psi minimum.. if it can if not bye bye turbo
if you want to run just pump then go then go with 18psi wga
the wga psi is what the turbo will run at a minimum, so if you have a bad boost leak and say you are running the 25psi wga then your turbo will do whatever it takes to make that 25psi "minimum wga duty" even if it has to run at 50psi to achieve the 25psi minimum.. if it can if not bye bye turbo
Last edited by bbyevo8u; Feb 20, 2010 at 06:15 AM.
Boost leak test is there to pin point your leak so it can be fixed. Boost leaks will really put a damper on your expected results and tuning.
well if you stay with meth then 25psi wga
if you want to run just pump then go then go with 18psi wga
the wga psi is what the turbo will run at a minimum, so if you have a bad boost leak and say you are running the 25psi wga then your turbo will do whatever it takes to make that 25psi "minimum wga duty" even if it has to run at 50psi to achieve the 25psi minimum.. if it can if not bye bye turbo
if you want to run just pump then go then go with 18psi wga
the wga psi is what the turbo will run at a minimum, so if you have a bad boost leak and say you are running the 25psi wga then your turbo will do whatever it takes to make that 25psi "minimum wga duty" even if it has to run at 50psi to achieve the 25psi minimum.. if it can if not bye bye turbo
Thanks for the info. So i plan to stay with meth so i guess the 25psi unit is what I want? Like i said, i normally read for hours about parts before I buy anything but I can't seem to find any good info about wastegates?? And since i'm already making 32psi I should have to worry about hurting the turbo with the 25psi wga unless something else goes wrong?
18psi means that's the lowest boost you can hit with 0 preload. 25psi same thing. It really depends on what your average boost will be.
Boost leak test is there to pin point your leak so it can be fixed. Boost leaks will really put a damper on your expected results and tuning.
Boost leak test is there to pin point your leak so it can be fixed. Boost leaks will really put a damper on your expected results and tuning.
Doing a boost leak test tomorrow.
Also, are their any benefits to a 25psi FP wastegate over a 18psi one over than ability to hold peak boost?
Like it seems up to 25psi, the 25psi wastegate would be utilizing the turbo much more?? In other words, the 18psi would be making the turbo spin harder because it's diverting air earlier and more air later on??
Like it seems up to 25psi, the 25psi wastegate would be utilizing the turbo much more?? In other words, the 18psi would be making the turbo spin harder because it's diverting air earlier and more air later on??
Also, are their any benefits to a 25psi FP wastegate over a 18psi one over than ability to hold peak boost?
Like it seems up to 25psi, the 25psi wastegate would be utilizing the turbo much more?? In other words, the 18psi would be making the turbo spin harder because it's diverting air earlier and more air later on??
Like it seems up to 25psi, the 25psi wastegate would be utilizing the turbo much more?? In other words, the 18psi would be making the turbo spin harder because it's diverting air earlier and more air later on??
With your mods and like stated before, just go with the 25psi wastegate.Same price.
So, it's going to be a 25psi FP wastegate (is there a forge equivalent?)
and either a forge rs bov, or a aps bov... Anyone have any hard evidence of either being reliable/daily driveable at 30+ psi??
Thanks again for everyone's input.