Adz Turbo

How much boost will a standard uk "99" engine take befor it lets go. I know after a lot of re-maps they go upto about 1.2 bar which ive heard is nice but im just intersted how much they can take. (Bare in mind it will have a boost contraller on it, so it will not be running a high boost all the time just when a lot of power is wanted, as its hardley ever driven hard!)

Thanks
Adz

Paulo P

iTrader: (42)

It all depends on what mods you have fitted. To be running 1.2 bar you will need to alter the fuelling and ignition timing.

New_scooby_04

iTrader: (4)

If you're going to do anything to the boost, at the very least you should be having someone listen to the engine with Det cans and monitor the AFR with a wideband meter to make sure it's running safely.

Personally, I wouldn't be touching the boost without a remap by an expert. Boost is just one part of the power equation and fueling and ignition should also be modified accordingly

Taking the cheap route can often mean an expensive bill!

Ns04.

RB5_245

They run rich std anyway (unless the mafs knackered) so you could pick it up a bit. You'll hit fuel cut at about 19psi IIRC so you can't go nuts.

It is built in as a safety margin though so I wouldn't mess about with it if you don't know what you're doing. If you are going to change it, set it on a cold day as you'll run slightly higher boost then anyway.

jim litten

They may run rich as standard, but you've already cut into that safety margin when it's fully decatted, so uping the boost is edging towards the dodgy area, unless you've got some way of monitoring knock or afr.

john banks

I ran my UK spec MY00 engine at 1.8 bar and it didn't blow up. But I did it properly.

SiHethers

My UK MY99 is running strong at 1.6 bar and has been for 20-30000 miles I think. It's almost done 100,000 miles now, but I do look after it

It's been running at least 1.2 bar boost since around 45,000 miles.

Hope I haven't hexed myself now (crosses fingers and toes)

Simon

Adz Turbo

Monitoring knock or afr, which are please??

Adz Turbo

What did you have to do to do it properly? As in uprating things etc...

Adz

Adz Turbo

Have you done anything to yours by uprating parts when you put it upto 1.6

And looking after it do you mean by doing oil changes and things like that??

Adz

RB5_245

Knock - Rather than a smooth burn in the combustion chamber for one reason or another it becomes slightly, or a lot, uncontrolled with the potential for a massive failure in seconds if it's bad enough.

Monitored on a knocklink , Or while mapping or adjusting using det cans. Which are pretty much a car stethescope.

AFR - Air Fuel Ratio, monitored by measuring lamba value in the exhaust using either a lambalink or afr gauge day to day but using a rather expensive wideband lambda sensor and meter when mapping, or if you're loaded

Adz Turbo

Im still a bit lost if im honest with you think ill have to sit down with someone who has done a lot of mods!

But is a knocklink worth it??

What about this one??
http://bbs.scoobynet.co.uk/showthread.php?t=523869

RB5_245

It was one of the first mods I bought once I decided the car was no longer going to stay standard. Even if it doesn't light up it (as you hope it wont) it is there for piece of mind.

I didn't bother with the bosch sensor though, keeps the cost a bit lower.

Dave

SiHethers

Knock link and boost gauge were first investments for my car.

Mods include induction, exhaust, ignition, fuelling, charge cooling, heat management, octane, remapping, drivetrain.

Looking after properly = oil changes six monthly with ester based fully synthetic oil of appropriate grade, octane, warm-up, cool-down, prompt fault diagnosis, monitoring knock (via 2 independant sensors) and wideband AFR.

I appreciate this is a "high maintenance" car (very much like my missus ), but I enjoy it and want to keep it going as long as possible without uprating the internals/block.

Simon

New_scooby_04

iTrader: (4)

My advice woud be to sit down with a tuner mate. What works on one car may be completely inappropriate for another.

If you don't know what you're doing, it can all end in tears very quickly!

Ns04

RB5_245

There's also quite a few 'tuners' out there that I wouldn't leave my car with.

When first modding my car I asked a few different tuners the same question about how to get what I wanted. The responses were so different I gave up and thought I'd learn what I needed to know and make my own decision. Best thing I could have done imo.

People on here can give you a good idea where to start, and spout some absolute rubbish also

I think a good point is to decide what you want out of it, then ask people with similar mods what has and hasnt worked for them.

New_scooby_04

iTrader: (4)

True. so here's some names you can trust from my own personal experience. That's not to say they won't have slightly different ways of going about things, but you can take whatever they say to the bank as genuine experts who know the cars very well

David at APi
Bob Rawle
Andy Forrest
Knowlsey, Paul or Graham at Xtreme Scoobies.

There are lots of others out there too, I just cite the ones I've had experience/done business with.

Ns04

DIPSY

See with the ecutek custom remaps .The mapper must be able to move fuel cut a little higher than normal ??

RB5_245

NS04, Agree with that list.

yes an ECuTek map will raise (or remove?) the fuel cut.