fuel defender safe or not
#1
im thinking of fitting a fuel defender but have heard that they seriously increase the risk of a blown engine. is there a safe way of taking the defender off without to much risk to the engine?
#2
Scooby Regular
Join Date: Nov 2000
Location: 32 cylinders and many cats
Posts: 18,658
Likes: 0
Received 1 Like
on
1 Post
The dangers to your engine are from running too much boost or from overboosting and not having any fuel cut at all, not from the device itself. As always it is the idiots that use them that give them a bad name
#6
Well, yep, but it's the same thing as John says - on a correctly running, standard boost, etc. car, you should be able to fit a FCD & not care (as where fuel cut should cut in is never reached so the engine is never 'in danger'), but up the boost & it can go too far without the fuel-cut, & pop.
So, in other words, be vewy vewy carefuw!
Why's it being fitted?
So, in other words, be vewy vewy carefuw!
Why's it being fitted?
#7
I've got the HKS FCD.
It has a 12 position dial. 12 is off, 1 is max. Mine is set to 1 and fuel cut doesn't come in at 1.5 bar! Which is what I'm running at the mo!
You can set it to 10 or 11 quite safely I'd say which will give you a bit of a rise in fuel cut but it shouldn't be dangerous.
How are you planning to up the boost?
If you are even considering one though, I'd look at what fuel you are using and how it is controlled/ monitored first.
Yep, I run mad boost but I've got an EGT gauge and AFR meter to check things are ok. I also run Optiomax with NF and an HKS AFR.
Don't just slap up the boost, run 95 ron and change nothing else... That is dangerous. As John B says, be smart and it's fine, be dumb and it's expensive!!
Cheers
Rich
It has a 12 position dial. 12 is off, 1 is max. Mine is set to 1 and fuel cut doesn't come in at 1.5 bar! Which is what I'm running at the mo!
You can set it to 10 or 11 quite safely I'd say which will give you a bit of a rise in fuel cut but it shouldn't be dangerous.
How are you planning to up the boost?
If you are even considering one though, I'd look at what fuel you are using and how it is controlled/ monitored first.
Yep, I run mad boost but I've got an EGT gauge and AFR meter to check things are ok. I also run Optiomax with NF and an HKS AFR.
Don't just slap up the boost, run 95 ron and change nothing else... That is dangerous. As John B says, be smart and it's fine, be dumb and it's expensive!!
Cheers
Rich
Trending Topics
#10
Unusually succinct answer from John!
Quite seriously, you are missing out on a lot of potential power running that sort of set up on a standard STi ECU. A re-map would allow you to get more power and retain a sensible safety margin. Just fitting a fuel cut defender will allow you to run higher boost without hitting the fuel cut, but you will not get the most power and you are in risk of damaging your engine.
Why not give Steve Done a ring and see what he can do for you.
Duncan
Quite seriously, you are missing out on a lot of potential power running that sort of set up on a standard STi ECU. A re-map would allow you to get more power and retain a sensible safety margin. Just fitting a fuel cut defender will allow you to run higher boost without hitting the fuel cut, but you will not get the most power and you are in risk of damaging your engine.
Why not give Steve Done a ring and see what he can do for you.
Duncan
#12
Yep,
Remap probably best for you. You Jap ECU is used to 100 RON remember and you are using 98. Start upping the boost too much without an Octane booster and Mr. Det will come a knockin'!
Rich
Remap probably best for you. You Jap ECU is used to 100 RON remember and you are using 98. Start upping the boost too much without an Octane booster and Mr. Det will come a knockin'!
Rich
Thread
Thread Starter
Forum
Replies
Last Post
Mattybr5@MB Developments
Full Cars Breaking For Spares
28
28 December 2015 11:07 PM
Mattybr5@MB Developments
Full Cars Breaking For Spares
12
18 November 2015 07:03 AM