Took the Evo for a power run today

[Mikeyc]

Power drops off early too. Wondering if it was knocking on the rollers?

The guy who ran it said it was fueling perfectly?????

 

[sponners]

The guy who ran it said it was fueling perfectly?????

Was he wearing earphones when he ran it on the rollers? Did he say anything about knocking/det/detonation/pulling timing?

 

[Mikeyc]

Was he wearing earphones when he ran it on the rollers? Did he say anything about knocking/det/detonation/pulling timing?

No I don't think he was and he didn't mention anything like that

 

[sponners]

He should've been wearing earphones to listen to the engine in order to run it safely on the dyno.


Do you have the fueling graph? The way the power drops off yet the boost is holding would suggest detonation (or poor mapping).

 

[Mikeyc]

He should've been wearing earphones to listen to the engine in order to run it safely on the dyno.


Do you have the fueling graph? The way the power drops off yet the boost is holding would suggest detonation (or poor mapping).

It's on an ecutek re map and what would you suggest? Thanks

 

[Mikeyc]

Do not have the fueling graph mate. Any help is appreciated

 

[sponners]

Do you know if it was mapped on the road or mapped on the dyno?

If it was mapped on the road then chances are it's fine, but either way to know for sure you need to get someone to check it whilst running it on the road. (only a ten minute job)

Are there any geekmappers local to you?

 

[Mikeyc]

Do you know if it was mapped on the road or mapped on the dyno?

If it was mapped on the road then chances are it's fine, but either way to know for sure you need to get someone to check it whilst running it on the road. (only a ten minute job)

Are there any geekmappers local to you?

I'm not sure, I will ask the previous owner. I'm in west Sussex do you know of any?
Again, thanks for the help

 

[Mikeyc]

Just been told by previous Owner it was mapped on dyno, best get it checked then, If anyone knows who can do this in the west Sussex area then please let me know

 

[sponners]

I'm not sure, I will ask the previous owner. I'm in west Sussex do you know of any?
Again, thanks for the help

Not sure mate, I'm sure someone on here will know someone down there.

Don't worry about it too much in the meantime, but if your gunning it and you feel the power dropping of a bit then it would be wise to ease of the throttle a bit.

 

[Mikeyc]

Not sure mate, I'm sure someone on here will know someone down there.

Don't worry about it too much in the meantime, but if your gunning it and you feel the power dropping of a bit then it would be wise to ease of the throttle a bit.

I've been taking it easy anyway never going over 6000 rpm as I felt the power drop off anyway so never drove it over 5500.
I'll put a post up and see if anyone can help. Thanks a lot mate

 

[sponners]

I've been taking it easy anyway never going over 6000 rpm as I felt the power drop off anyway so never drove it over 5500.
I'll put a post up and see if anyone can help. Thanks a lot mate

Well if you can feel the power dropping off dramatically then chances are that it is experiencing det. So sounds like you'll probably need a remap to get it sorted but someone checking it will be able to tell you this.

On a plus side you'll get higher bhp figures next time you run it on a dyno after a remap.

 

[sponners]

Just thought, you are running it on the correct fuel? vpower/tesco99 ?

Best to keep it below 5500rpm until it's sorted.

 

[Mikeyc]

Shell v power only mate.
Thanks I'll get it checked

 

[Mikeyc]

Just thought, you are running it on the correct fuel? vpower/tesco99 ?

Best to keep it below 5500rpm until it's sorted.

Took the graphs to a friend of mine today who is a bit of a geek with mapping etc..and he said whoever has dyno'd the car hasnt calibrated the torque with the hp andhasnt taken the reading from the rollers or something??? so thats why the torque line is all over the place...

Also where the power drops off when holding boost he thinks whoever mapped it etc reduced the degree of ignition after det point which he said is wrong


But he has offered to fit a new ECU for me and map it properly :razz:

The only reason I didnt go to him in the first place is because his dyno is broken at the moment and he is waiting for parts.

Glad I had it checked though.

 

[Big Tone]

Hopefully problem solved soon bud

 

[sponners]

Took the graphs to a friend of mine today who is a bit of a geek with mapping etc..and he said whoever has dyno'd the car hasnt calibrated the torque with the hp andhasnt taken the reading from the rollers or something??? so thats why the torque line is all over the place...

I don't know much about the setup of dynos but is the guy refering to the crossover point not being at 5250? If so then that is just down to different scalings on the graph.....not an issue.

Also where the power drops off when holding boost he thinks whoever mapped it etc reduced the degree of ignition after det point which he said is wrong

Although possible I find that to be unlikely,
If the car experiences detonation on the dyno the standard ecu detects this and automatically reduces the ignition timing in order to try and save the engine from damage.

But he has offered to fit a new ECU for me and map it properly :razz:

The only reason I didnt go to him in the first place is because his dyno is broken at the moment and he is waiting for parts.

Glad I had it checked though.

What is the spec of your car? and what do you want to use the car for, road, competition etc?

The standard ecu you have is more than capable for most applications unless you want a full on competition car and will save you a heap of money sticking ith the standard ecu.

 

[Mikeyc]

I don't know much about the setup of dynos but is the guy refering to the crossover point not being at 5250? If so then that is just down to different scalings on the graph.....not an issue.




Although possible I find that to be unlikely,
If the car experiences detonation on the dyno the standard ecu detects this and automatically reduces the ignition timing in order to try and save the engine from damage.



What is the spec of your car? and what do you want to use the car for, road, competition etc?

The standard ecu you have is more than capable for most applications unless you want a full on competition car and will save you a heap of money sticking ith the standard ecu.

The crossover point is exactly what he was saying re torque curve,

If that is the case with the standard Ecu detecting det, then retarding ignition then essentially similar to what he has said only it is doing this itself so not in the map, so what he has told me is correct but without plugging the car in its hard to tell,either way I am having It looked at to get it spot on,

My car is running 380/365 at the moment, Walbro pump, piper 272 cams, aps inter cooler,3" pipe from turbo back, decat, ecutek remap, dump valve, sbc blitz boost controller, usual mods.

But I am building a stroker so think I will go for a vipec Ecu which I will need in the long run anyway so that's cool.

 

[sponners]

Standard ecu will work fine on a stroker mate.

 

[Mikeyc]

Just got the car out of the body shop ...driving it home last night and the power drastically dropped off at 6000rpm......drove it home carfefully and put it away.
I just went to take it out a minute ago and it is misfiring/struggling through the rev range......do you think they could have got water in the engine or sprayed electrics???

Pretty annoyed