OVERBOOST.. IS IT GOOD OR BAD?
#1
Scooby Regular
Thread Starter
iTrader: (1)
Join Date: Nov 2012
Location: west midlands
Posts: 338
Likes: 0
Received 0 Likes
on
0 Posts
OVERBOOST.. IS IT GOOD OR BAD?
Hi all just some advised required please. My car is mapped to 1.7bar peak but last night while on the motorway it was recording 1.9 bar on my toucan boost gauge it was cold and a empty road so i had plenty of room to enjoy myself. Now i understand its overboosting can some explain why? And is overboost good or bad for my engine?
Cheers
Cheers
#2
Scooby Regular
Hi all just some advised required please. My car is mapped to 1.7bar peak but last night while on the motorway it was recording 1.9 bar on my toucan boost gauge it was cold and a empty road so i had plenty of room to enjoy myself. Now i understand its overboosting can some explain why? And is overboost good or bad for my engine?
Cheers
Cheers
#5
Scooby Regular
Join Date: Nov 2000
Location: 32 cylinders and many cats
Posts: 18,658
Likes: 0
Received 1 Like
on
1 Post
It depends whether the cooling, tune, fuel flow, octane, compression, engine internals, clutch and transmission are up to the extra boost, whether it introduces a loss of smoothness or boost oscillation etc.
If you have it tuned on the bleeding edge at 1.7 bar and it is on the limits for a few or more of the above then it will probably do damage. If on the other hand you have engine management that is doing closed loop boost control is and is deliberately programmed to run extra boost and knows the wideband O2 and is good at knock control then it may be completely by design.
Bottom line, is it a timebomb shed that you're stretched to the max or a quality setup with depths of engineering reserve built in? If the latter I expect you'd already know the answer.
If you have it tuned on the bleeding edge at 1.7 bar and it is on the limits for a few or more of the above then it will probably do damage. If on the other hand you have engine management that is doing closed loop boost control is and is deliberately programmed to run extra boost and knows the wideband O2 and is good at knock control then it may be completely by design.
Bottom line, is it a timebomb shed that you're stretched to the max or a quality setup with depths of engineering reserve built in? If the latter I expect you'd already know the answer.
#6
Scooby Regular
Thread Starter
iTrader: (1)
Join Date: Nov 2012
Location: west midlands
Posts: 338
Likes: 0
Received 0 Likes
on
0 Posts
Cheers lads, its running on alcatec ecu, it does have closed loop boost control and is kept at very safe boost at 1.7 it has auto knock detection and deletion and was put together by ET so from looking at jbanks comment im assuming it wont do any damage.
Thread
Thread Starter
Forum
Replies
Last Post
Mattybr5@MB Developments
Full Cars Breaking For Spares
20
22 October 2015 06:12 AM
Suby786
Engine Management and ECU Remapping
0
19 September 2015 04:31 PM