Fluctuating boost but don't think it's fuel cut!
#1
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
So hopefully a quick one.
2001 Bugeye UK300 with decatted up pipe, 3 inch cobra cat back, cosworth panel filter, Prodrive y - pipe but standard apart from that.
On hard acceration the boost fluctuates from 5 to 15 psi but I am pretty sure it's not fuel cut as my experience of fuel cut is that it kicks in quick hard where as my problem feels like I am lifting my foot of the go go peddle gently. I haven't got any leaks that I can see but was wondering if anyone has experienced this and has any solutions or suggestions. Boost controller etc??
It's has not been mapped yet so I am not ragging it around too much, just the odd overtake.
Any ideas guys?
2001 Bugeye UK300 with decatted up pipe, 3 inch cobra cat back, cosworth panel filter, Prodrive y - pipe but standard apart from that.
On hard acceration the boost fluctuates from 5 to 15 psi but I am pretty sure it's not fuel cut as my experience of fuel cut is that it kicks in quick hard where as my problem feels like I am lifting my foot of the go go peddle gently. I haven't got any leaks that I can see but was wondering if anyone has experienced this and has any solutions or suggestions. Boost controller etc??
It's has not been mapped yet so I am not ragging it around too much, just the odd overtake.
Any ideas guys?
Last edited by MedicInAUK300; 28 January 2014 at 10:41 AM.
#2
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
"It's has not been mapped yet so I am not ragging it around too much, just the odd overtake."
Therein lys your problem, factory ecu will drop boost if it hears det and or the car overboosts. With those mods there is a fair chance it is quite lean in boost.
Therein lys your problem, factory ecu will drop boost if it hears det and or the car overboosts. With those mods there is a fair chance it is quite lean in boost.
#4
Scooby Regular
iTrader: (1)
Join Date: Sep 2013
Location: Cotswolds
Posts: 806
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
Well worth cleaning your MAF sensor and boost solenoids out. I have similar mods to you without the major fluctuation issues. Mine was a liitle rough on idle and would fluctuate on part throttle. Cleaning those two sorted it. Mine's being mapped Feb 12th. You fitted fuel pump yet?
#5
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
Thanks for that Dave. Will clean the Maf and solenoid. Car originally had the PPP fitted so assume it has the 255 uprated fuel pump but probs best check. Will clean the bits and see how it goes. Going to arrange for a mapping session too. Thanks again buddy
![Smile](https://www.scoobynet.com/images/smilies/smile.gif)
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post
Scott@ScoobySpares
Full Cars Breaking For Spares
61
11 January 2021 03:08 PM
oilman
Trader Announcements
15
01 October 2015 11:55 AM
DogsofWar
Engine Management and ECU Remapping
16
23 September 2015 07:41 PM