Fitted a new msd chip at the weekend for my new spec, got the chip in set the fuel pressure to 3.5 bar with the vacume pipe off, now ive only just got round to setting the co, i popped down to me local garage and on first inspections it was 10% msd advise 2.7-3 %.

Had a liltle playu around but couldnt get it below 8.5, why is this ???

i turned the scre a fair few times and wonder if ive fucked it, ive also herd that it can sometimes need re-setting...

im going to ring msd in the morning for advise but thought id ask on here first as im an impatien fucker

 

Did you plug the vac pipe to the FRP when you set the fuel pressure?

Do you know what the AFR is at idle? I'm assuming it isn't closed loop?

 

vac was unplugged when i set the base pressure, at idle its 10.5-11 on my innovative so very rich

 

Scrap it!!!!!!!!

What you should do mate is put it on a set of dark greens, stick a T4 on it and wind the boost up to 45 psi. The injectors you have now are WAY too big!

 

Remember that 2 bar map sensor you sent me ?

That was needed as my cossie was showing 8% and no amount of adjusting could get the co down.

Once fitted it was back to normal.

I didnt know it was so high until m.o.t. time !!

 

Get it on the rollers and have it setup right you dont want to melt it..
be nice to see what it makes now you got a t38 fitted

 

Well changed the water temp sensor, air charge sensor and a different map sensor and its still around 12.3.

Fucking things doing my head in need to check the tps tomorrow to see if thats the cause, also going to try the old chip and see if i can get it lower with that

 

melt it you must be joking mate not with the amount of fuell ive got, its bore wash territery

 

Did you phone MSD ?

 

yeah mate they said to check the sensors i mentioned which has made shit all difference, the water temp was a rite bastad aswell. Im hoping the tps is causing it but its pissing me off now

 

Just let stu know m8 he will sort it out for ya.

 

hope so mate, need to book it in a torques but i would rather find the cause myself as im tight

 

Have you changed from L6 to L8 ?

 

no mate im still l6

 

thought id try my old chip earlier and half a turn the co was down to a steady 14-14.5, so im assuming its the software, will give msd a ring in the morning and see what they say

 

Aftersales service is spot on m8.

 

im wondering if its got anything to do with my 4x4 inlet and 14mm spacer, i forgot to tell will when he was specking the chip