Well I was all excited about getting me remapped rex back cuz its not been running right since I bought it 4 weeks ago, only to be disappointed.
Its a whole lot better than it was but its still far from right.
Set off from traffic lights on full throttle, did about 30 foot then it nearly put me thro the windscreen as everything cut out momentarily.
I discovered after that it will only accellerate on two thirds throttle. Its had a new set of plugs and been given a clean bill of health (bonus).
Its peak power is only 320 and boosting at just over 0.8 but its a whole lot faster than me GTR 33 which was 350.
Do these symptoms ring any bells with anybody?
any response much appreciated.
Cheers
Andy
Sounds like you have boost cut programmed in to you ECU
From your description it sounds like fuel cut. If I were you I\'d take it back to whoever mapped it asap
Quote from: rotaryart.uk.comSounds like you have boost cut programmed in to you ECU
Is that something that can be mapped out of an apexi
sounds to me like it has a crazy lean spot in a section of the map. that is if it suddenly cuts. normally the engine note will drop out and it will pick up again afte it has cleared the cells.
or
it could be over fueled in this section. it would fart a lot as well....
or
3rd... you are coming with in 0.25 of the map sensor limit on the power fc. ( most people bull sh1t the setting and run a seperate boost controller )
sway
Yup same symptoms exactly, mine only does it in 1st and second though, 3rd, 4th and 5th are great (thank you to my good friend for the map!!!!)
i rekon my problem is to do with something hard eg. plugs, injectors ect.ect.
im wondering if its got anything to do with having a Bosch 040 but no aftermarket FPR??
hmmmm
Rmaj
on another point above, mine is not NOT running lean as my knock is fine with a top score of 40ish.
Rmaj
Well I took the rex back today to my mapster, he took it on a test drive and the fault didn\'t happen (of course).
He then turned the boost down to 0.8 and all seems to be running smoothly, goes like foook actually.
The only problem i\'ve got now is it keeps going round corners sideways. How do I cure this?:Giggle
The big test will be Saturday when I take it to Blighton for a track day.
Get a good set of boots for it, check the tyre pressures and check your alignment. Are the shocks ok?
When all is well the back end should take a good nailing out of corners without letting go (in the dry).
Quote from: cannonballerThe only problem i\'ve got now is it keeps going round corners sideways. How do I cure this?:Giggle
Quote from: rmagictasticon another point above, mine is not NOT running lean as my knock is fine with a top score of 40ish.
Rmaj
Dont realy on a knock profile to show a lean spot. chances are it wont show much.
What fuel pump have you got and how much is normally in the tank when it happens?
I had severe problems with mine using an aftermarket pump (think it was a 040) on around 1/4 tank of petrol, straight line and round corners. I Changed it for an apexi pump which seemed to solve it.
Rmaj-sent a pm.
regards
Jon
usually around 1/4 tank....hmmmmm
will speak to you shortly slippers.
Rmaj
The problem is due to the stock tank and the pump sucking the baffle dry.. its very common
Sway, do you think that this is a possible/probable cause??
Rmaj
This is the problem.... Thats why suge tanks and swirl pots are popular. When you increase supply the pump will drain the tank baffle very quickly. You need to stay above a 1/4 full tank. You could opt for a fuel cell to cure this but will loose your boot.
what should i try???
filling the tank to the brim and doing another run???
Rmaj
If you are on the stock fuel pump and injectors you would have to run the tank very low to induce this problem. Might be worth investigating the wiring to the pump though as this has been known to break down, after all these cars are mostly 10+ years old and things like wiring have a shelf life.
Problem solved, fuel starvation.
im running Bosch 040 with 850 primaries and secondaries.
filled the tank right up (it was on just over 1/4)...ta darrrrrrr! no problems.
Rmaj