The engine has an apexi intake, apexi exhaust, decat, greddy rep intercooler and mbc
@ 16psi. Bit low power wise? and fueling seems abit all over the place?[/img]Dyno printout of my car Bit concerned about the fueling, what do you guys think?
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Dyno printout of my car Bit concerned about the fueling, what do you guys think?
The engine has an apexi intake, apexi exhaust, decat, greddy rep intercooler and mbc
@ 16psi. Bit low power wise? and fueling seems abit all over the place?[/img]Re: Dyno printout of my car Bit concerned about the fueling, what do you guys think?
If iv'e remeberd it right your afr is too low at the top end ie, your running lean at the top end, which is why your not making as much power as you should be.
I think it should be around 11/11.5 at the top, i could be wrong, if i am im sure somebody will be along shortly to correct me.
I think it should be around 11/11.5 at the top, i could be wrong, if i am im sure somebody will be along shortly to correct me.
Re: Dyno printout of my car Bit concerned about the fueling, what do you guys think?
I'm pretty sure it's the other way around mate, i.e it starts at 18:1 (18 airs to 1 fuel) which is quite lean and go's down to 9:1 quite rich but as you say I dont think it should go any richer then around 11:1
(18 airs to 1 fuel) which is quite lean and go's down to 9:1 quite rich but as you say I dont think it should go any richer then around 11:1Re: Dyno printout of my car Bit concerned about the fueling, what do you guys think?
Your too lean early in the power range, coming on boost your @ 16-1!
Whats your setup chap?
@ 16-1!Whats your setup chap?
TOTB 2010 Rwd top speed, 1/4 and shootout winner.
10.7@142 on R888 street tyres, 10.3@134mph on slicks,
9's on slicks to come, with a clean full throttle pass! Goal of 0-150mph in a 1/4 of a mile....
10.7@142 on R888 street tyres, 10.3@134mph on slicks,
9's on slicks to come, with a clean full throttle pass! Goal of 0-150mph in a 1/4 of a mile.
...Re: Dyno printout of my car Bit concerned about the fueling, what do you guys think?
Running lean gives more power.
When are you coming on full boost? Your AFR curve is pretty even. It looks to be running a bit lean between 3000 rpm and 4500rpm when it starts to richen out.
When are you coming on full boost? Your AFR curve is pretty even.
It looks to be running a bit lean between 3000 rpm and 4500rpm when it starts to richen out.Re: Dyno printout of my car Bit concerned about the fueling, what do you guys think?
greeny wrote:Your too lean early in the power range, coming on boost your
Whats your setup chap?
I know, why so lean on tick over? the computer was reading 20:1 at times.
Setup is standard rev3 turbo fueling and ecu bar the uprated pump,Re: Dyno printout of my car Bit concerned about the fueling, what do you guys think?
easty-5 wrote:Running lean gives more power.
When are you coming on full boost? Your AFR curve is pretty even.
Full boost normaly comes in at around 3500rpm
Re: Dyno printout of my car Bit concerned about the fueling, what do you guys think?
why did you change the pump?
Re: Dyno printout of my car Bit concerned about the fueling, what do you guys think?
Dundee wrote:greeny wrote:Your too lean early in the power range, coming on boost your
Whats your setup chap?
I know, why so lean on tick over? the computer was reading 20:1 at times.
Idle should be around 14.5-1 IIRC.
Where did you have the runs done?
Are you sure there wideband was working correctly/calibrated.
The standard ecu should be keeping you alot richer earlier, yet its dropping into the 10's higher up.
Whats the uprated pump? What boost were you running?
TOTB 2010 Rwd top speed, 1/4 and shootout winner.
10.7@142 on R888 street tyres, 10.3@134mph on slicks,
9's on slicks to come, with a clean full throttle pass! Goal of 0-150mph in a 1/4 of a mile....
10.7@142 on R888 street tyres, 10.3@134mph on slicks,
9's on slicks to come, with a clean full throttle pass! Goal of 0-150mph in a 1/4 of a mile.
...Re: Dyno printout of my car Bit concerned about the fueling, what do you guys think?
jdbecks wrote:why did you change the pump?
When I did the conversion It was suggested the standard rev1 na fuel pump wouldn't be up to the job so I thought, I may as well go for one that I wont have to change if I decied to go for a big power hike
Re: Dyno printout of my car Bit concerned about the fueling, what do you guys think?
greeny wrote:Dundee wrote:greeny wrote:Your too lean early in the power range, coming on boost your
Whats your setup chap?
I know, why so lean on tick over? the computer was reading 20:1 at times.
Idle should be around 14.5-1 IIRC.
Where did you have the runs done?
Are you sure there wideband was working correctly/calibrated.
The standard ecu should be keeping you alot richer earlier, yet its dropping into the 10's higher up.
Whats the uprated pump? What boost were you running?
The fuel pump is walbro 255, boost was 16psi, I had it done at Bridgwater College as my friend lectures there, he calibrated the system before the runs but tbo I dont know alot about the workings of a RR
Re: Dyno printout of my car Bit concerned about the fueling, what do you guys think?
i would have thought your car would be toast if it was that lean for so long up the rev range....
id try another dyno, see what they get.
...id try another dyno, see what they get.
Re: Dyno printout of my car Bit concerned about the fueling, what do you guys think?
Will do Jim, that was the advice on, ahem 'another' forum as well, will post the results!!
'another' forum as well, will post the results!!