Tesco 99 screws my car up!
29 July 2011, 09:02 PM
#1
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Tesco 99 screws my car up!
Go all,
The car runs fine on vpower, boosts to the correct bar as it was mapped, and runs lovely.
Put a drop of tesco 99 in and it overboosts massively ( like 1.6/1.7 bar) and runs like a bag of spanners!
Anybody else noticed this? As soon as I put vpower in again it's like flipping a switch - all back to normal... Very weird!
James
The car runs fine on vpower, boosts to the correct bar as it was mapped, and runs lovely.
Put a drop of tesco 99 in and it overboosts massively ( like 1.6/1.7 bar) and runs like a bag of spanners!
Anybody else noticed this? As soon as I put vpower in again it's like flipping a switch - all back to normal... Very weird!
James
29 July 2011, 10:19 PM
#6
Tesco burns slowly and if you have anti lag, or a greater overlap on cams , this can lead to higher EGT's , excessive fuel though the hot side can cause boost issues. Recently I asked about software used on ECU's some software has a rather static map set up that can be upset by fuel changes.
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30 July 2011, 12:13 AM
#8
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Mine pefers tescos finest to v power! Which is fine by me as I work for Tesco so can fill out on the way outta work! No messing around finding a shell! Plus Tesco seems to be about 7p cheaper here.
30 July 2011, 09:03 AM
#9
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funny you should post this. i filled up with tesc99 the other day. then within 10 mile overboost. and engine light. which was handy *** the mrs nearly went over the bonnet. couldnt of happened at a better time i was struggling to convince her the remap i had booked in was really needed.. lol
03 August 2011, 04:38 PM
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Unless its mapped to the edge of its limits either tesco or v power should be ok. Most mappers leave a little lea way for different suppliers. I can use either in mine without any noticable difference
03 August 2011, 05:15 PM
#15
Go all,
The car runs fine on vpower, boosts to the correct bar as it was mapped, and runs lovely.
Put a drop of tesco 99 in and it overboosts massively ( like 1.6/1.7 bar) and runs like a bag of spanners!
Anybody else noticed this? As soon as I put vpower in again it's like flipping a switch - all back to normal... Very weird!
James
The car runs fine on vpower, boosts to the correct bar as it was mapped, and runs lovely.
Put a drop of tesco 99 in and it overboosts massively ( like 1.6/1.7 bar) and runs like a bag of spanners!
Anybody else noticed this? As soon as I put vpower in again it's like flipping a switch - all back to normal... Very weird!
James
Apparently Sainsburys do a higher ron fuel, but don't quote me on that as I haven't seen it personally
06 August 2011, 01:12 AM
#17
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its one of those suck it and see, some cars prefer one to the other.
vpower does have additional chemicals in it so if its been mapped for it then will prob prefer vpower. but that isnt always a stead fast rule lol
vpower does have additional chemicals in it so if its been mapped for it then will prob prefer vpower. but that isnt always a stead fast rule lol
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