View Full Version : Power run results :(
chris01
15-03-14, 06:52 PM
Well today I went and had a power run done on my car, unfortunately it didn't go to well :( the car is down on power and I have been advised not to drive it at full throttle due to the risk of ending its life :(
The car is running dangerously lean :(
The question is, can I just fit a fuel pressure regulator and crank it up??
any help/opinions are gratefully received
http://i1107.photobucket.com/albums/h385/focus35/10015647_10203174626545543_1021229767_n_zps82e1684 0.jpg (http://s1107.photobucket.com/user/focus35/media/10015647_10203174626545543_1021229767_n_zps82e1684 0.jpg.html)
red=bhp
blue=torque
yellow=fuelling
http://i1107.photobucket.com/albums/h385/focus35/1176314_10203172273646722_1663956873_n_zps5ab702ee .jpg (http://s1107.photobucket.com/user/focus35/media/1176314_10203172273646722_1663956873_n_zps5ab702ee .jpg.html)
talkingcars
15-03-14, 07:09 PM
The fuelling is controlled by the ECU and is based on perimeters such as air inlet temperature and the lambda sensors.
I would check the OBD data to make sure they are all ok.
What if any mods have you done to the engine?
Quadcam24
15-03-14, 07:10 PM
thats a nice linear graph and decent power, what mods have you got?
they all run a little bit lean up the top end, if its very lean id found out why and fix it.
chris01
15-03-14, 07:18 PM
The guy who rolled it said it was due to intake..so my induction :( i asked them to map it to correct it but they couldnt access the ecu so said that an aftermarket ecu is neccessary, Unless i can find a specialist...i have just fitted a decat so i imagine that the lambda readings are well out, but i was under the impression that this would make it run rich?? Theres no engine light on and nothing comes up when on diagnostic but the decat has only been on for roughly 300miles so i imagine the mil will light up soon
chris01
15-03-14, 07:23 PM
Mods are enclosed viper pipercross situated in the arch lining with custom stainless piping upto the tb, janspeed decat, cat back with 4" tailpipe..and then other little bits like magnecor leads etc...so nothing really major
petet16
15-03-14, 08:40 PM
I wouldn't be too concerned tbh.
Aftermarket management for the mods you have is madness imo.
chris01
15-03-14, 08:47 PM
I wouldn't be too concerned tbh.
Aftermarket management for the mods you have is madness imo.
Thats what i thought tbh and theres no way that i would take that route, they did say that iam on the verge or unreliability though? Although iv never had an issue...
So can i just fit a fuel regulator and turn the fuelling up or will this just make it over fuel when cruising?
are you sure that 14:1 is dangerously weak?
The ECU does not adapt that much to mods, it would need a remap to rich it up if you wanted to.
It does not need an aftermarket ecu.
cars can run a little leaner on idle and light throttle anyway.
Skillen
15-03-14, 10:23 PM
Doesn't the lambda only adjust on closed loop?
So it wouldn't affect the high revs open throttle situation?
carmadbaker
16-03-14, 05:18 AM
Looks like ATSpeed racing, guys that mapped the turbo zed.
Dan1971
16-03-14, 07:43 AM
Not too sure by the photo of the engine, but, if that's a V6 - with those mods, I reckon the power you have is the mods compensating for a duff vis motor or 2.
So really - I reckon - you have decent power. Check the operation of the vis motors and you'll find 15-20 bhp if they are not working.
Now - I'm no guru - just a thought.
The guy who rolled it said it was due to intake..so my induction :( i asked them to map it to correct it but they couldnt access the ecu so said that an aftermarket ecu is neccessary, Unless i can find a specialist...i have just fitted a decat so i imagine that the lambda readings are well out, but i was under the impression that this would make it run rich?? Theres no engine light on and nothing comes up when on diagnostic but the decat has only been on for roughly 300miles so i imagine the mil will light up soon
matt reidy 07709453760 / 0845 301 1517 is the specialist.
if its std mani's and a decat, the mil may not ever come on.
chris01
16-03-14, 08:28 AM
Looks like ATSpeed racing, guys that mapped the turbo zed.
I went to atspeed racing in rayleigh, nice guys and them seemed to know what they were talking about
chris01
16-03-14, 08:31 AM
Not too sure by the photo of the engine, but, if that's a V6 - with those mods, I reckon the power you have is the mods compensating for a duff vis motor or 2.
So really - I reckon - you have decent power. Check the operation of the vis motors and you'll find 15-20 bhp if they are not working.
Now - I'm no guru - just a thought.
i thought this but if i had a duff vis would i not have a noticeable dip on the graph??
Erm, I know its early n all - but isnt the yellow line showing its running rich, if anything?
chris01
16-03-14, 08:34 AM
are you sure that 14:1 is dangerously weak?
.
I have no idea mate lol, im just going on what the pro told me. But he did say if it got hot enough and was at full throttle (i.e track day) then it would go bang
Dan1971
16-03-14, 09:14 AM
i thought this but if i had a duff vis would i not have a noticeable dip on the graph??
I don't think it would show a dip - it just wouldn't show the spike as it should when they kick in hence your very straight linear result.
It could be fueling wrong because it's providing fuel for the extra power that the working vis would give, but as it's not working, it's all wrong.
Just a thought mind you.
I have done a few runs with working and fubarred motors. When it was fubarred in my Mk1 I recorded about 149bhp and was running rich. In my Mk2 that I have now, I recorded about 184 with them both working well and all I've got mod wise is a piper cat back.
Graphs are on here somewhere.
chris01
16-03-14, 10:10 AM
Well just been out in the car this morning and the engine light has illuminated :( po420 which has come up as cat...didnt take long for the car to realise it is decatted lol....has any got a link to a mil kit?
Dan1971
16-03-14, 11:15 AM
Well just been out in the car this morning and the engine light has illuminated :( po420 which has come up as cat...didnt take long for the car to realise it is decatted lol....has any got a link to a mil kit?
http://www.ebay.co.uk/itm/Lotus-MG-Rover-ZR-ZS-F-TF-25-45-Decat-Sports-Cat-MIL-EML-Eliminator-kit-/261413087808?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3cdd6f2a40
Seller's a member here too.
Mate - for a fiver - join the site as a member which will give access to a vis tester.
talkingcars
16-03-14, 11:29 AM
It's proberbly come on as a result of the power run, if you have a code clearer it will come on every once in a while, only takes 5 seconds to clear.
chris01
16-03-14, 11:47 AM
http://www.ebay.co.uk/itm/Lotus-MG-Rover-ZR-ZS-F-TF-25-45-Decat-Sports-Cat-MIL-EML-Eliminator-kit-/261413087808?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3cdd6f2a40
Seller's a member here too.
Mate - for a fiver - join the site as a member which will give access to a vis tester.
the cars kicks in perfect at aroundabout 3000-3200rpm so im under the impression that the vis is fine...its a massively noticeable kick aswell....surely is the vis was dud it wouldnt be any where near the 182bhp even with the mods??
chris01
16-03-14, 11:49 AM
It's proberbly come on as a result of the power run, if you have a code clearer it will come on every once in a while, only takes 5 seconds to clear.
yeah iv got my own obd2 reader and iv just cleared it..but i still want a mil kit lol
Skillen
16-03-14, 12:00 PM
My mk1 has never twigged on I've decatted it and my mk2 found it once and I turned it off and it hasn't been back on in 2k miles.
I wouldn't worry about it.
Dan1971
16-03-14, 12:13 PM
the cars kicks in perfect at aroundabout 3000-3200rpm so im under the impression that the vis is fine...its a massively noticeable kick aswell....surely is the vis was dud it wouldnt be any where near the 182bhp even with the mods??
No kick according to your graph.
Your mods should give you closer to 190/195 in my view. If not the power vis, the balance could be causing you issues and if it's not working they have been known to chop a good 20bhp off RR results.
I'd check them if I were you. Otherwise - I have no idea why your power is so relatively low.
chris01
16-03-14, 02:44 PM
Has anyone got a picture of a rr graph with everything working properly? Just so i can compare my graph??
Dan1971
16-03-14, 03:08 PM
Mine's in this thread. Shallow graph but it shows an ever so slight spike just after 3K rpm.
http://www.themgzs.co.uk/vb/showthread.php?t=26458&highlight=alpine
stamford
16-03-14, 03:38 PM
All 180s run lean at the top end, it won't kill the engine but it could be better. Remapping it is the way to go once you have completed your engine mods. If just a daily driver then hardly a concern as how often will you be at the red line? Track days then yes most certainly.
chris01
17-03-14, 12:34 AM
Mine's in this thread. Shallow graph but it shows an ever so slight spike just after 3K rpm.
http://www.themgzs.co.uk/vb/showthread.php?t=26458&highlight=alpine
How would i go about checking the vis system??
I don't think that's got vis issues, if it did the graph would be more inconsistent. Got to remember also many zs will only be pushing 160-170 standard, with those mods brining it up higher to 180, sounds about right in my opinion. Do you know what the bhp @ wheels was? That's a easier way of seeing proper results and issues as the calculated an vary from one place to another
Dan1971
17-03-14, 07:29 AM
How would i go about checking the vis system??
Post 19. Join the site and use the tester. Without doing that and not using a tester first, have a look at a how to for repairing them to see if you fancy it.
I seem to be alone in thinking that one of your vis motors could be busted though.
I simply feel that you should have more power than you have got with those mods, and for the sake of testing them, I'd check.
chris01
17-03-14, 07:33 AM
I don't think that's got vis issues, if it did the graph would be more inconsistent. Got to remember also many zs will only be pushing 160-170 standard, with those mods brining it up higher to 180, sounds about right in my opinion. Do you know what the bhp @ wheels was? That's a easier way of seeing proper results and issues as the calculated an vary from one place to another
the power at the wheels was 152.8....i had rolled when i first got as completly standard and it made 175 bhp...i then had it rolled again after fitting a cat back only and it made 182bhp and the iv just had it done this time where iv added decat and induction so i was expecting a bit more than the last time, not a massive improvement but 186-188 would of been nice :( ...torque hasnt really changed regardless of mods?
To be fair, the losses you are expecting (all things being equal on the dyno and assuming the mods actually are making a difference) could be down to needing a good service.
chris01
17-03-14, 10:14 AM
It had a major service roughly 2 months ago including all the belts, literally everything was changed even right down to gearbox oil
chris01
17-03-14, 10:31 AM
Maybe i was just expecting to much from the old girl lol
chris01
17-03-14, 05:58 PM
So the next question is..is 200bhp within reach just from a remap??
I'm with Dan, I would expect a bit more with the mods you have. Worth a check of your VIS regardless tbh, I couldn't tell you by the graph in they are working or not but definately worth a check before any remapping.
200 should be in easy reach, you should just be closer to it than you are IMO. Only go for a remap if your not planning any more engine mods:)
chris01
17-03-14, 06:32 PM
Whats the best way to check the vis and if they werent working whats the best way to tell i.e watching how the revs pick up etc??
You should feel an extra little push at about 3.2k revs and another near 4k iirc, shouldn't be to sluggish from low revs. Could even be worth just whipping em off, checking solder etc. my power VIS showed up as a problem on my VIS indicators a couple of months ago, what sorted it was just a take apart, lube and reassemble. Easiest way of course is to use the site tester but in the interim I would do the above.
Whats the best way to check the vis and if they werent working whats the best way to tell i.e watching how the revs pick up etc??
As mentioned by Dan before, join this site as a member for £5. Then you will have access to a VIS tester. The tester will test both your VIS motors without needing the engine running. This will give you a conclusive answer whether you are having VIS issues or not.
http://www.themgzs.co.uk/vb/showthread.php?t=19882
Quadcam24
17-03-14, 08:43 PM
your vis are fine, perfect linear graph proves that , ive seen plenty failed vis graphs and they are nothing like yours.
Your power is fair, maybe a tiny bit low, it could be 185-190 max but every roller reads different, try more rollers and you will get more different numbers.
You have a very healthy graph so stop worrying, i ragged mine on track for thousands of miles on standard mapping with more mods and nothing ever went bang.
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