Technical help Q & A Got A technical problem with you car? Keep it in here where the techies hang out and we will try to solve it for you!!

2 bar of boost on standard injectors?!?!?!

Thread Tools
 
Search this Thread
 
Old 12-03-2011, 10:50 AM
  #1  
d.kenny
I'm Finding My Feet Here Now
Thread Starter
 
d.kenny's Avatar
 
Join Date: Oct 2007
Location: west midlands
Posts: 119
Likes: 0
Received 0 Likes on 0 Posts
Default 2 bar of boost on standard injectors?!?!?!

is this right???

well i know its not the done thing its just i dont know what has been tampered with!!!

when i first got it it was totally standard or so i was told

so i put a boost guage on it and found it was running nearly 1.5 bar of boost!!!

i was gonna wind it down but i thought its been like this for years and hasnt popped the engine yet so leave it lol

so since then i have fitted a 3 inch scorpion exhaust and rs500 intercooler and i drove it yesterday and its hitting nearly 2 bar now!!!

on closer inspection i think the cap has been flicked off the fpr but i dont know what else has been done...on the first drive when purchased it definitley didnt feel like 200 brake or so

just with a bootful in second in the dry it is all over the shop (tail happy i mean)!!!

what should i do??

its a 2wd saff by the way

cheers
Old 12-03-2011, 12:00 PM
  #2  
oldford
I've found that life I needed.. It's HERE!!
 
oldford's Avatar
 
Join Date: Jan 2008
Location: Netherlands
Posts: 1,135
Received 25 Likes on 25 Posts
Default

What map-sensor does it have? Standard chip or something else?

I would get it checked/remapped by somebody who knows what he's doing.
Old 12-03-2011, 12:47 PM
  #3  
martysmartie
PassionFord Post Whore!!
iTrader: (1)
 
martysmartie's Avatar
 
Join Date: Dec 2007
Posts: 8,461
Received 103 Likes on 101 Posts
Default

No in road trim it's a restricted engine so to speak as such it only runs 0.8 BAR (10 PSI) maximum, stage 1 raises this to around 15PSI and everything else stays standard, beyond this you need to change the MAP sensor to a 3 BAR item because you are now running more than the standard 2 BAR item can see and of course a software calibration to suit (Remap) Remember the atmospheric pressure is 1 BAR and so in reality the standard item can only see a BAR boost as you are now running more boost you need to provide fuel for it, as such the injectors need uprating to higher flow rate items (Typically Bosch green injectors or as of late the Siemens 55LB equivilants.

Btw if the injectors are standard they will be yellow.

The exception to the the above is something knows as a "Gunship" conversion, other companys do the same thing as well, this basically allows you to run near stage 3 power on an otherwise standard car by running a higher boost pressure.

It's not just a case of bolting on hardware, I would strongly advise you to drive it GENTLY to a tuner ASAP otherwise you could end up damaging/melting the engine!


One things a given, that is it isn't the standard software! If it was then fuel injection is cut at 7000RPM or 13PSI boost (Hard cut), even remapped software should still have a boost cut which you don't seem to have!

Do you know the chip thats fitted?

Also something you can easily check is to make sure one of the hoses either from the compressor housing, or to the actuator have not come off/split, as this would run infinate boost!

Martin

Last edited by martysmartie; 12-03-2011 at 12:48 PM.
Old 12-03-2011, 04:09 PM
  #4  
d.kenny
I'm Finding My Feet Here Now
Thread Starter
 
d.kenny's Avatar
 
Join Date: Oct 2007
Location: west midlands
Posts: 119
Likes: 0
Received 0 Likes on 0 Posts
Default

no do niot have a clue what chip etc its running>>>i guess it must have one though

yh its on standard yellows

unsure of map sensor as i dont know how you could tell...part number anybody????

it must have been like this for a while as bloke before me had it like this and as far as he was aware it was standard...or so he said

it does smell very rich???

could this be a sign somet else has been done

i jujst thought possibly someone may have titted about with it and wound the fuel pressure up to cope with the extra boost??

No???

cheers
Old 12-03-2011, 07:39 PM
  #5  
tabetha
20K+ Super Poster.
 
tabetha's Avatar
 
Join Date: Jul 2006
Location: uk
Posts: 24,596
Likes: 0
Received 3 Likes on 3 Posts
Default

The only sure way of telling what is what is get it on the rollers where you can see the fuelling under load, someone could well of just whacked the(fuel) rail pressure up via the FPR.
The std 2 bar map sensor will read beyond 2 bar despite it's name, same as the 3 bar will read beyond 3 bar, as each have a over boost reading facility.
The std 2 bar is marked APS 02/03, the 3 bar is marked SPA 05/01.
You may have been very lucky so far, but best get it checked, at the very least a fuelling check, open the ecu and see what the chip has written on it as well.
tabetha
Old 13-03-2011, 08:29 AM
  #6  
oldford
I've found that life I needed.. It's HERE!!
 
oldford's Avatar
 
Join Date: Jan 2008
Location: Netherlands
Posts: 1,135
Received 25 Likes on 25 Posts
Default

A standard 2-bar map sensor will go a little beyond 2 bar absolute, Yes. But no more than .15 of a bar, which gives you a maximum of 1.15 bar overboost. 2 bar overboost is just way to much for a standard map-sensor.
Old 13-03-2011, 08:50 AM
  #7  
tabetha
20K+ Super Poster.
 
tabetha's Avatar
 
Join Date: Jul 2006
Location: uk
Posts: 24,596
Likes: 0
Received 3 Likes on 3 Posts
Default

Just for your information, the APS 02/03 has a overpressure of 200%, WAY more than 0.15bar, the 05/01 reads up to 450kPa, the problem is the accuracy is not there above the official range, which is in the case of the 2 bar up to 2.16BAR/216kPa, and the 3 bar is 3.08BAR/306kPa.
The 2 bar map sensor reads 22.61mv for everykPa, the 3 bar reads 15.46mv for every kPa.
tabetha

Trending Topics

Old 13-03-2011, 08:59 AM
  #8  
R5FORD
10K+ Poster!!
iTrader: (1)
 
R5FORD's Avatar
 
Join Date: Jul 2006
Location: wolverhampton/ australia
Posts: 10,753
Likes: 0
Received 3 Likes on 3 Posts
Default

Maybe your injectors have been painted yellow.
Old 13-03-2011, 09:09 AM
  #9  
COLEYST200
PassionFord Post Whore!!
iTrader: (3)
 
COLEYST200's Avatar
 
Join Date: Sep 2007
Location: Leicestershire
Posts: 8,243
Received 144 Likes on 133 Posts
Default

I would ring Martin at Reyland and ask him to look at it befor you harm the motor Martin will tell you wot is rong with the motor and will not bull shit you and he is in Birmingham 0121 458 6010
Old 13-03-2011, 09:10 AM
  #10  
oldford
I've found that life I needed.. It's HERE!!
 
oldford's Avatar
 
Join Date: Jan 2008
Location: Netherlands
Posts: 1,135
Received 25 Likes on 25 Posts
Default

Well, I was off by exactly 0.01 bar, WOW.
Nice drawings of the range of a map sensor: http://www.forzavx.com/gecu/hw/APS02-03_APS05-01.pdf
And you can forget about 450kpa on the 05/01. 308kpa absolute is the maximum.
Old 13-03-2011, 06:19 PM
  #11  
tabetha
20K+ Super Poster.
 
tabetha's Avatar
 
Join Date: Jul 2006
Location: uk
Posts: 24,596
Likes: 0
Received 3 Likes on 3 Posts
Default

Just getting my info from the fact sheet sent to myself from Andy Gray at(then) webcon, assume he knows.
tabetha
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
manuel boeckx
Ford RS Cosworth Parts for Sale
13
03-10-2015 02:29 PM
mint_s2
Cars for Sale
4
02-09-2015 08:58 AM
gchristophi
Ford Sierra/Sapphire/RS500 Cosworth
19
31-08-2015 10:36 PM
blackbeautyzetec
Ford Escort RS Turbo
19
29-08-2015 02:11 PM
Toe Knee
Cars & Parts Wanted.
1
23-08-2015 08:31 AM



Quick Reply: 2 bar of boost on standard injectors?!?!?!



All times are GMT. The time now is 07:26 PM.