View Full Version : 400ish BHP
Andrew Dunk Shaw
10-12-02, 17:32
Question for the Tech guys,
Going to be upgradeing my uk tt auto to
Full Decat
Boost Controller
FCD
Up Rated Fuel Pump.
Already has
SuperDrager, R Spec FMIC, Iridium Plugs, Induction Kit,
Should then be according to the rolling road results somewhere in the 400-420 HP at crank.
Will it need anything doing with the ignition timeing ?? or will the stock ECU be ok to deal with this HP ??
The stock ECU should be able to handle the timing for you.
Just make sure to get the fuelling checked after your mods.
Andrew Dunk Shaw
10-12-02, 17:42
Cheers Martin,
Just that im being given different ideas on
how to get to the 400 + club.:)
Andrew
Sounds very simular to Matt H's spec so gotta get u close to 400BHP. Good luck!
Darren
You will fuel ok if you fit an S-AFC and adjust the fueling to suit.
If you get a CW decat then get his fueling boss fitted on it. This allows him to stick his Wideband probe into the front pipe and check your fueling out...therefore letting you know how much boost you can safely run...remember the UK/j-spec ecu's only have a map up to 1bar after that it just stays the same....
Gaz Walker
10-12-02, 19:41
Originally posted by Alex Holdroyd
You will fuel ok if you fit an S-AFC and adjust the fueling to suite.
Incidently I have one of them for sale Andrew, £200 all in to you :)
New, unused.
Plug over...
Gaz.
MONKEYmark
10-12-02, 19:51
would love to know what i am putting out,will be up for next rolling road.i always underestimate to be on safe side.if you get the aem unit will it cut out all the need for fcd and fuel comps and other electronic boxes.
i have not got any except fuel cut defencer.
good to hear some supra lads getting 400+ bhp but saying that the uk spec is not that far behind 400
its just 400+ sounds good.
Andrew Dunk Shaw
10-12-02, 21:47
Originally posted by gazwalker
Incidently I have one of them for sale Andrew, £200 all in to you :)
New, unused.
Plug over...
Gaz.
I'll speak to Leon about it tomorrow, as he only mentioned i'd need his full decat pipe, blitz boost controller, fcd, and to play safe an uprated fuel pump seeing as mines getting a bit old.
I'll let you know Gaz asap, ta for the offer.
Is replacing the fuel pump an easy job to do?
Originally posted by Thorin
Is replacing the fuel pump an easy job to do?
Leon reckons on around an hour.
R
Neil Sandham
11-12-02, 09:39
For the mods you have and are doing, I wouldnt have thought the fuel pump needs up rating. remember the UK spec is higher capacity than J spec standard.
cheers
Neil.
Originally posted by Neil Sandham
For the mods you have and are doing, I wouldnt have thought the fuel pump needs up rating. remember the UK spec is higher capacity than J spec standard.
cheers
Neil.
They do slow down a bit with age.
Andrew Dunk Shaw
11-12-02, 09:47
Originally posted by Neil Sandham
For the mods you have and are doing, I wouldnt have thought the fuel pump needs up rating. remember the UK spec is higher capacity than J spec standard.
cheers
Neil.
Its getting changed because its 8+ yrs old and done 90,000 miles of pumping:sex: :D :D
Gaz Walker
11-12-02, 10:28
... and thats a lot of pumping :eek: ;) :p
Gaz.
Originally posted by Andrew Dunk Shaw
Its getting changed because its 8+ yrs old and done 90,000 miles of pumping:sex: :D :D
Is the Walbro the pump to go for ? or the Duel Walbo as shown on http://www.mkiv.com/techarticles/fuel_control/index.html
Been thinking about getting one from TDI http://www.tdi-plc.com/suprafuelpumpdata.html
but would I need a fuel regulator as well? anything else? fuel filter? Anyone got a step by step guide to doing it?
Also MKIV.com says about the Apexi S-AFC "Do not modify the low throttle settings. While at low throttle (in closed loop mode) the ecu will counteract any changes made and over time your long term fuel map will be modified." is that right? It would have been at low revs that I'd be more concerned about running lean and use the AFC for that purpose.
I have a TDI pump ....... no issues. I fitted it for piece of mind .
It came with instructions that were clear enough. The only thing I added was a relay...( use the original 9v pump supply to trigger the relay to use the 12v .....)
Fitted in an hour at the most
Do you get a new fuel regulator with the TDI kit then? Do I need one?
Andrew Dunk Shaw
12-12-02, 09:44
Originally posted by matt
peace even.........
LOL
:)
Originally posted by Thorin
Do you get a new fuel regulator with the TDI kit then? Do I need one?
You shouldn't need one as long as your existing FPR is in good condition.
Originally posted by Thorin
Been thinking about getting one from TDI http://www.tdi-plc.com/suprafuelpumpdata.html
but would I need a fuel regulator as well? anything else? fuel filter? Anyone got a step by step guide to doing it?
Also MKIV.com says about the Apexi S-AFC "Do not modify the low throttle settings. While at low throttle (in closed loop mode) the ecu will counteract any changes made and over time your long term fuel map will be modified." is that right? It would have been at low revs that I'd be more concerned about running lean and use the AFC for that purpose.
Check with Chris Wilson as well re fuel pumps, that's where I got mine from. Stock regulator will be fine. A new pump filter comes with the pump, the inline filter's lifespan isn't affected by the swap and should be swapped as a service item as per normal.
The injector upgrade (Resources -> Technical Reference) article has a bit at the end on swapping the fuel pump. It's easy enough, what you have to do depends on the size of the new pump. Getting at the pump is the hard part, and the article deals with that.
Why would you be running lean at low revs? And don't confuse low revs with a light (low) throttle opening. Closed loop mode is engaged when a constant throttle opening is detected and it's below some threshold (say when you are doing a steady 55mph in traffic). Booting it in 2nd gear at 2500rpm is going to drop it straight into open loop mode, so any modifications to the fuelling by the AFC will not affect the ECU map.
The thing about attempting to affect the fuelling at low throttle openings sounds about right, though. You shouldn't need to adjust those settings as the ECU does it for you in closed loop mode.
-Ian
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