ROVER 25, 2.0 IDT ... MAP or EGR problem - Page 2 - MG-Rover.org Forums
 2Likes
Reply
 
LinkBack Thread Tools Rate Thread Display Modes
post #21 of 36 (permalink) Old 01-12-2016, 09:36 Thread Starter
Registered User
 
Join Date: Oct 2011
Car: Rover 25
Posts: 90
With my EGR vaccum pipe blocked, witch settings gives me more power:
1. with MAF with paperclip
2. with MAF disconnect and without paperclip?

Now iti with pipe block and paper clip on MAF but feels powerless(before needing to block EGR pipe it has more power...
alex_orastie is offline  
Sponsored Links
Advertisement
 
post #22 of 36 (permalink) Old 01-12-2016, 12:02
Registered User
 
Join Date: May 2004
Location: Under a car near scunthorpe
Car: Maestros, 200, 600, ZTT
Posts: 25,312
Send a message via MSN to E_T_V
If the ECU doesn't notice that the MAF is bypassed then you should get more power with the paperclip in the wiring connector than without it. (without it plugged in the ECU will definitely know it is faulty and ignore the signal and use default safe fuel levels which are lower at high rpm. )

I assume you are connecting the correct two pins on the MAF sensor plug (not the maf sensor itself)?
E_T_V is offline  
post #23 of 36 (permalink) Old 01-12-2016, 12:25 Thread Starter
Registered User
 
Join Date: Oct 2011
Car: Rover 25
Posts: 90
yes...1 and 5 i thing i connect from MAF sensor plug...
alex_orastie is offline  
 
post #24 of 36 (permalink) Old 05-12-2016, 08:43 Thread Starter
Registered User
 
Join Date: Oct 2011
Car: Rover 25
Posts: 90
Quote:
Originally Posted by E_T_V View Post
Don't bother with the rimmers site trying to find part numbers for the nozzles as I don't think they'll have them

The nozzle part numbers are:

Di injector nozzles
DSLA 145 P 446

25/45 injector nozzles are
DSLA of 145 DSLA P 870

You want to swap the P870 nozzles which you have with the P446 ones.

i have found in my garage 3 injectors.... KBAL70p46 200 ... something like that ... are they SDI or TDI? i have not find no1 electric injector...
alex_orastie is offline  
post #25 of 36 (permalink) Old 06-12-2016, 17:59 Thread Starter
Registered User
 
Join Date: Oct 2011
Car: Rover 25
Posts: 90
E_t_v ... Do u know????
alex_orastie is offline  
post #26 of 36 (permalink) Old 06-12-2016, 20:01
Registered User
 
Join Date: May 2004
Location: Under a car near scunthorpe
Car: Maestros, 200, 600, ZTT
Posts: 25,312
Send a message via MSN to E_T_V
If they have 200bar stamped on them then they are probably DI injectors which flow more fuel. You need all 4 though!
E_T_V is offline  
post #27 of 36 (permalink) Old 08-01-2017, 20:09
Registered User
 
Join Date: Oct 2016
Location: Lancashire
Car: 2.0D Impression
Posts: 29
can i join in?

hi gents im interested in MORE POWER would ditching the CAT improve things? i am thinking about a straight thro bit of pipe replacement.
AND is it that simple to get hp gains as mentioned just by changing injectors?
Nomad76 is offline  
post #28 of 36 (permalink) Old 08-01-2017, 22:13
Registered User
 
Join Date: May 2004
Location: Under a car near scunthorpe
Car: Maestros, 200, 600, ZTT
Posts: 25,312
Send a message via MSN to E_T_V
Depends on what car you have to start with!
E_T_V is offline  
post #29 of 36 (permalink) Old 10-01-2017, 22:41
Registered User
 
Join Date: Oct 2016
Location: Lancashire
Car: 2.0D Impression
Posts: 29
Quote:
Originally Posted by E_T_V View Post
Depends on what car you have to start with!
its a... Rover 25 2litre Diesel
Nomad76 is offline  
post #30 of 36 (permalink) Old 10-01-2017, 22:51
Diesel Tuning Dude
 
Dakta's Avatar
 
Join Date: Jul 2007
Location: Wakefield
Car: 75 Tourer Conn SE & 45 TDi VNT
Posts: 17,814
Garages
Send a message via MSN to Dakta
To put it very briefly, the 'usual advice' for a 25 diesel for more horsepower would be (generic advice follows):

service > fit sdi injectors > increase boost (~19psi) > remap to suit

(+ decat if desired at any stage for slightly improved spool)

The remap and sdi injectors are where most power gains are to be had, you can do one or the other, or both but you must do at least one for more power. The decat as you mentioned wont do a right lot but will help with spool.

Other options like mafless, egr deletes etc are possible with a remap so if anything like this is necessary it sort of answers its own question.
Nomad76 likes this.



Dieselpowered - file revisions ahead of the competition
Dakta is offline  
post #31 of 36 (permalink) Old 10-01-2017, 23:07
Registered User
 
Join Date: Oct 2016
Location: Lancashire
Car: 2.0D Impression
Posts: 29
Nice one Dakta that's what i'll do then! any ideas why its slug like below 2k? (NOT egr valve fouling) but y'know that smallbore vacuum pipe that comes off egr thats held on with insulation tape & well placed zip tie cos its broke at egr end
Thoughts?
Nomad76 is offline  
post #32 of 36 (permalink) Old 10-01-2017, 23:20
Diesel Tuning Dude
 
Dakta's Avatar
 
Join Date: Jul 2007
Location: Wakefield
Car: 75 Tourer Conn SE & 45 TDi VNT
Posts: 17,814
Garages
Send a message via MSN to Dakta
These engines will never give a massive amount of power below 2k, but the biggest cause of it to be excessively poor under 2000rpm is a failing maf sensor - this is VERY common.



Dieselpowered - file revisions ahead of the competition
Dakta is offline  
post #33 of 36 (permalink) Old 11-01-2017, 00:33
Registered User
 
Join Date: Oct 2016
Location: Lancashire
Car: 2.0D Impression
Posts: 29
Quote:
Originally Posted by Dakta View Post
These engines will never give a massive amount of power below 2k, but the biggest cause of it to be excessively poor under 2000rpm is a failing maf sensor - this is VERY common.
yer i tried to get maf out the "tool" i bought dont fit but it needs sorting out so going down the service & injector bit first,
just need a bit more poke tbh
Nomad76 is offline  
post #34 of 36 (permalink) Old 11-01-2017, 13:35
Registered User
 
Join Date: May 2004
Location: Under a car near scunthorpe
Car: Maestros, 200, 600, ZTT
Posts: 25,312
Send a message via MSN to E_T_V
Unplugging the MAF sensor may well restore your lost low rev power (at the expense of a lower rev limit and on post -04 cars turning the engine management light on).

If it does restore performance the MAF is definitely tired.
Nomad76 likes this.
E_T_V is offline  
post #35 of 36 (permalink) Old 22-01-2017, 20:01
Registered User
 
Join Date: Oct 2016
Location: Lancashire
Car: 2.0D Impression
Posts: 29
Quote:
Originally Posted by E_T_V View Post
Unplugging the MAF sensor may well restore your lost low rev power (at the expense of a lower rev limit and on post -04 cars turning the engine management light on).

If it does restore performance the MAF is definitely tired.
i will try that this week sometime i have a few other issues as well ie one clip on air box left i have a cable tie holding it in but i think air is getting in where i dont want it to, also vacuum pipe on egr is knackered, the egr valve is clean, i just think it should pull a damn sight better than it does
thanks
Nomad76 is offline  
post #36 of 36 (permalink) Old 11-02-2017, 22:44
Registered User
 
Join Date: Oct 2016
Location: Lancashire
Car: 2.0D Impression
Posts: 29
any idea where i can get injectors from?
Nomad76 is offline  
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the MG-Rover.org Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes Rate This Thread
Linear Mode Linear Mode
Rate This Thread:



Similar Threads
Thread Thread Starter Forum Replies Last Post
Wobbly Gearstick Rover 25 2.0 IDT fergw MG ZR / Rover 25, 200 & Streetwise 13 03-07-2015 11:33
2004 idt egr blank graaham1808 MG ZS / Rover 45 & 400 6 07-03-2015 22:02
Big problem with my Rover 45 iDT engine vladd.alex MG ZS / Rover 45 & 400 27 17-08-2013 08:19
My Rover 45 2.0 iDT is smooking vladd.alex MG ZS / Rover 45 & 400 6 26-06-2013 13:12
rover 25, 2.0 IDT-ABS problem alex_orastie MG ZR / Rover 25, 200 & Streetwise 22 19-11-2011 06:16

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome