max power from a ct9?

[TomS]

it as only hittin that but then it kind of cleared itself then started to hit 0.8 bar near 5k rpm mate, that a safe number?

0.8 is fine but beware of fuel cut which happens at 0.85 bar (you'll know it if you hit it) feels like a judder. I'd say you're getting a nice bit of boost creep due to the side exit and mesh. Your next mod should be a hks actuator so you can bring the boost down a little to ensure you don't hit fuel cut. Until then keep an eye on the boost gauge so she dosen't creep beyond 0.85.

Have you noticed it getting quicker?

 

[danb87]

0.8 is fine but beware of fuel cut which happens at 0.85 bar (you'll know it if you hit it) feels like a judder. I'd say you're getting a nice bit of boost creep due to the side exit and mesh. Your next mod should be a hks actuator so you can bring the boost down a little to ensure you don't hit fuel cut. Until then keep an eye on the boost gauge so she dosen't creep beyond 0.85.

Have you noticed it getting quicker?

wel it has hit fuel cut once is that a bad thing? what am i mena do? n how much are them actuator n where do i get one from? will it stop fuel cut?

 

[Sparky]

I made 185hp and 185ft/lbs @ 1 bar

You will need supporting mods though!!

I was running a Emanage Blue for the fuelling, and then your usual stainless mani, decat, cat back system, front mount filter and intercooler.

I have seen people with just over 190hp max from teh standard turbo with the correct mods

 

[Texx]

how much are them actuator n where do i get one from? will it stop fuel cut?

Although an adjustable actuator wouldn't be a bad purchase, it's not really going to cure your problem of boost creep only allow you to lower the spring pressure that holds the wastegate shut. It may help avoiding fuel cut, but the resulting downside is going to leave your turbo with lots of lag and a low peak boost level high up the rev range. The only way to successfully cure boost creep on a stock CT9 is to port out the wastegate.

Porting the wastegate will stop the turbo hitting above fuel cut boost levels.

 

[TomS]

wel it has hit fuel cut once is that a bad thing? what am i mena do? n how much are them actuator n where do i get one from? will it stop fuel cut?

An actuator won't stop fuel cut but it will allow you to reduce boost to a level where you won't hit fuel cut any more. There are a few hks actuators in the for sale section for around the £50 mark. New actuators are around £100 most of the traders sell them like monster motorsport.

 

[danb87]

Although an adjustable actuator wouldn't be a bad purchase, it's not really going to cure your problem of boost creep only allow you to lower the spring pressure that holds the wastegate shut. It may help avoiding fuel cut, but the resulting downside is going to leave your turbo with lots of lag and a low peak boost level high up the rev range. The only way to successfully cure boost creep on a stock CT9 is to port out the wastegate.

Porting the wastegate will stop the turbo hitting above fuel cut boost levels.

whats guna happen if i hit fuel cut?

 

[TomS]

but the resulting downside is going to leave your turbo with lots of lag and a low peak boost level high up the rev range.

How is fitting an upgraded actuator to a ct9 going to result in increased lag if anything lag will be reduced due to the stronger spring in the actuator allowing boost to be built up faster. Low peak boost level? it won't need be lower than stock 0.65 unless serious boost creep is being experienced

The only way to successfully cure boost creep on a stock CT9 is to port out the wastegate.

Increasing boost to 1 bar (once all supporting mods are in place) will in some cases eradicate boost creep on a stock ct9 with or without a ported wastegate

 

[ibz]

if meshing the turbo is more restrictive than a front mount air filter, would that result in less boost creep. at the moment my boost is set to 1 bar but creeps slightly, would meshing the turbo restrict it and reduce the boost creep?

 

[Texx]

whats guna happen if i hit fuel cut?

Not a great deal, it's when the ECU detects an unexpectedly high boost pressure and cuts fuel to stop the high boost pressure damaging the engine. You don't really want the engine to suffer fuel cut too often, so you need to try your best not to allow boost pressure to reach fuel cut levels. Port out your turbo's wastegate and your problem should be sorted.

 

[kieran.s gt]

if meshing the turbo is more restrictive than a front mount air filter, would that result in less boost creep. at the moment my boost is set to 1 bar but creeps slightly, would meshing the turbo restrict it and reduce the boost creep?

it might reduce creep but if the mesh is too restrictive the boost will drop off high in the rev range

 

[danb87]

what happens when you hit fuel cut isit bad????????????

 

[danb87]

Not a great deal, it's when the ECU detects an unexpectedly high boost pressure and cuts fuel to stop the high boost pressure damaging the engine. You don't really want the engine to suffer fuel cut too often, so you need to try your best not to allow boost pressure to reach fuel cut levels. Port out your turbo's wastegate and your problem should be sorted.

how do you port a wastegate

 

[kieran.s gt]

how do you port a wastegate

http://www.toyotagtturbo.com/forums/showthread.php?t=40945

 

[Texx]

How is fitting an upgraded actuator to a ct9 going to result in increased lag if anything lag will be reduced due to the stronger spring in the actuator allowing boost to be built up faster. Low peak boost level? it won't need be lower than stock 0.65 unless serious boost creep is being experienced

If you get boost creep with a stock actuator to the point of hitting fuel cut, how is a stronger spring going to help avoid fuel cut. The only way to avoid fuel cut in that situation is to reduce the amount of spring pressure holding the wastegate closed which in turn allows the wastegate to open earlier resulting in more lag and less peak boost.

boost to 1 bar (once all supporting mods are in place) will in some cases eradicate boost creep on a stock ct9 with or without a ported wastegate

That's not eradicating boost creep, only bolting on mods to cope with the affects of boost creep.

It's simple, pull off the decat, stick a die grinder in the wastegate to open it up a little and then bolt the decat back on. No additional money spent on unnecessary fuelling mods or an adjustable actuator. Why not just solve the problem rather than throw money at it trying to mask the problem.

 

[TomS]

@Texx I retract my first post above because reading over it now it sounds silly. but with regards to my second post i was assuming that Danb wanted to get the most out of the ct9 so 1bar boost with all supporting mods, i was just making the point that there may be little or no creep at that boost level regardless of wheither the wastegate is ported or not.

 

[danb87]

@Texx I retract my first post above because reading over it now it sounds silly. but with regards to my second post i was assuming that Danb wanted to get the most out of the ct9 so 1bar boost with all supporting mods, i was just making the point that there may be little or no creep at that boost level regardless of wheither the wastegate is ported or not.

i haven gota clue so im takin everything into account lol