Mase
Premium Member
Registered: 16th Sep 01
Location: Derbyshire
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I've noticed recently that when i use normal unleaded 95 RON my X14XE is pretty flat and doesn't feel as if it wants to rev and it feels as if its lacking in power between idle and around 3k rpm.
I put a tank full of super in yesterday and that problem has seemed to disappeared to a certain extent. What could cause this lack in power using 95 RON ?? Its had new plugs and air filter recently and had an oil change about 5000 miles ago...
Mase
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andyc1234
Member
Registered: 7th Nov 06
Location: Lancashire
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ive always run mine on super. had to put put normal petrol in and it felt gutless. stuck super back in it and it felt fine guess im just used to it
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vaux-tech
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Registered: 28th May 06
Location: Preston, Lancs. Drives: Astra SRI turbo.
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is this the super unleaded they use at shell garages i take it? never used it in the 8v, may try it next week on the gsi.
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andyc1234
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Registered: 7th Nov 06
Location: Lancashire
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stick some in, you dont really notice it that much but when u put normal stuff in you can feel theres less power bottom end. either run it on super or run it on normal, putting super in randomly doesnt really do anything, you have to run nearly a tank through before you can tell.
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matt_aka_smiler
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Registered: 7th Dec 05
Location: Stoke-on-Trent Drives: MK4 Astra GSi Turbo
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so whats a better fuel 97 or 99 ron?
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andyc1234
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Registered: 7th Nov 06
Location: Lancashire
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99s better thats what i have in mine 89p a litre from tesco 
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Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
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higher ron fuel will make no difference whatsoever in an N/A 1.4 engine
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andyc1234
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Registered: 7th Nov 06
Location: Lancashire
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running mine on 99 octane makes it what it probably used to be like back in the day, if i put normal petrol in it dies, 1.6 on the way soon. one thats not shagged.
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Dave A
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Registered: 10th Dec 03
Location: County Durham
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if your engine is having problems when running on normal petrol, fix the problem. using a higher ron fuel probably isnt solving the problem, maybe just masking it.
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andyc1234
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Registered: 7th Nov 06
Location: Lancashire
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im not too bothered about the engine really it was past it before i bought the car i think. always planned on changing it. why spend money trying to fix a 1.4 when i can save up for a 1.6 and some tb's
[Edited on 21-01-2007 by andyc1234]
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Jas
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Registered: 13th Oct 04
Location: Mid Wales
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i ran super unleaded in my car and I gained about 10mph top end. and about 1-2 seconds faster to 60mph, That was on my corsa 1.6 
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Dave A
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Registered: 10th Dec 03
Location: County Durham
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quote:
Originally posted by andyc1234
im not too bothered about the engine really it was past it before i bought the car i think. always planned on changing it. why spend money trying to fix a 1.4 when i can save up for a 1.6 and some tb's
[Edited on 21-01-2007 by andyc1234]
good engine choice 
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Dave A
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Registered: 10th Dec 03
Location: County Durham
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quote:
Originally posted by Jas16v
i ran super unleaded in my car and I gained about 1-2 seconds faster to 60mph, That was on my corsa 1.6
 quote of the week
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andyc1234
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Registered: 7th Nov 06
Location: Lancashire
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should be fun just need to get a list of parts sorted. not really helping the topic for mase really anyone any idea whats wrong with his engine or is it just shagged to death like mine.
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Jas
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Registered: 13th Oct 04
Location: Mid Wales
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quote:
Originally posted by Dave A
quote:
Originally posted by Jas16v
i ran super unleaded in my car and I gained about 1-2 seconds faster to 60mph, That was on my corsa 1.6
quote of the week
You should try it, I had a pipercross viper on mine too though so it was about 10-15bhp more than standard
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andyc1234
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Registered: 7th Nov 06
Location: Lancashire
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ive got a viper style kit on mine and full exhaust system inc manifold and its probably only 15bhp up on standard
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Dave A
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Registered: 10th Dec 03
Location: County Durham
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quote:
Originally posted by Jas16v
quote:
Originally posted by Dave A
quote:
Originally posted by Jas16v
i ran super unleaded in my car and I gained about 1-2 seconds faster to 60mph, That was on my corsa 1.6
quote of the week
You should try it, I had a pipercross viper on mine too though so it was about 10-15bhp more than standard
so an air filter and some higher ron fuel gained you 10-15bhp? no chance, possibly 2-3 if you are lucky
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Jas
Member
Registered: 13th Oct 04
Location: Mid Wales
User status: Offline
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nah read the pipercross box dave, it says like 10bhp more! and i got some tubing in there to get some more power.
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Shrek
Member
Registered: 2nd Nov 06
Location: Berkshire
User status: Offline
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quote:
Originally posted by Mase
I've noticed recently that when i use normal unleaded 95 RON my X14XE is pretty flat and doesn't feel as if it wants to rev and it feels as if its lacking in power between idle and around 3k rpm.
I put a tank full of super in yesterday and that problem has seemed to disappeared to a certain extent. What could cause this lack in power using 95 RON ?? Its had new plugs and air filter recently and had an oil change about 5000 miles ago...
might wanna check your map sensor pipe for splits, have you noticed any pinking/detonation?
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drunkenfool
Member
Registered: 7th Feb 03
Location: Hereford Drives: Audi R8 V8
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quote:
Originally posted by Jas16v
nah read the pipercross box dave, it says like 10bhp more! and i got some tubing in there to get some more power.
It's true. I was with him when he bought it and i saw the box too, he's not lying.
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Dave A
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Registered: 10th Dec 03
Location: County Durham
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quote:
Originally posted by Jas16v
nah read the pipercross box dave, it says like 10bhp more! and i got some tubing in there to get some more power.
you are joking right?
do you really think an overpriced hyped up air filter will gain anywhere near 10bhp on an otherwise standard 1.6
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Shrek
Member
Registered: 2nd Nov 06
Location: Berkshire
User status: Offline
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it makes your car go phwaaaarp and may show a 2bhp increase with a big fan infront of it!! 
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Rob B
Member
Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
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I think there joking Dave .... 
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Jas
Member
Registered: 13th Oct 04
Location: Mid Wales
User status: Offline
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Mase
Premium Member
Registered: 16th Sep 01
Location: Derbyshire
User status: Offline
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quote:
Originally posted by Shrek
might wanna check your map sensor pipe for splits, have you noticed any pinking/detonation?
No, I haven't noticed any pinking. I'll have another look at all the pipes for possible cracks, but haven't noticed anything thats too obvious.... Could it have anything to do with the flow of the fuel by any chance and by using the super unleaded, thats a bit more volatile (if thats even correct ??), it's masking the problem of a flow issue ?? I'm probably just making stuff up here, but its a start !!! What sensors could it be ?? I have not had the ECU light on since i've owned the car, so apart from it feeling a bit gutless lower down the revs, its fine...
[Edited on 21-01-2007 by Mase]
Mase
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