Fuel map

[imuir]

Just had a rr session and my car Griff 5ltr is runining lean whats the best solution and does anyone have any experience with emarald ecu's

[trackcar]

If your car is standard and running lean then there's a fault that needs addressing first before you think about any other mods .. no std TVR in good working order has ever run lean on my dyno, this is desite what you may read about TVR runnin lean .. I have never ever witnessed it .. if there's ever been a fuelling isue it's always beeen because there has been a fault on the car.. usually the fuel pressure regulator, but sensors, badly set throttle pot, air flow meter etc can call cause fuelling issues.

If you get your car fixed and still decide that you want to go aftermarket management (and it's a good first step epsecially if youre considering a tuning upgrade route in stages with your car) then the emerald is a very very good ECU to go for. I've fitted many of these, and mapped many more and they're a dream to work with on the dyno, they're stable and reliable, plus they're excellent value for money.

[imuir]

my car had been to TVR power (last owner got the work done) and it has what is known now as the taraka convertion and is makeing 270 bhp at 4700 rpm and 32o torque at 3700 rpm the power curve flattens after 4700 was told by RR guy that fueling was lean

[spend]

I think Joo gave you the answer, if it was on his RR he would probably have checked the fuel pressure with a gauge before continuing

Dave

[clive f]

joo is spot on as always, I had exactly the same problems with mine last year, and after having everything checked out, I fitted an adjustable fuel regulator, problem solved.

[eliot]

trackcar said:

If your car is standard and running lean then there's a fault that needs addressing first before you think about any other mods .. no std TVR in good working order has ever run lean on my dyno, this is desite what you may read about TVR runnin lean .. I have never ever witnessed it .. if there's ever been a fuelling isue it's always beeen because there has been a fault on the car.. usually the fuel pressure regulator, but sensors, badly set throttle pot, air flow meter etc can call cause fuelling issues.

If you get your car fixed and still decide that you want to go aftermarket management (and it's a good first step epsecially if youre considering a tuning upgrade route in stages with your car) then the emerald is a very very good ECU to go for. I've fitted many of these, and mapped many more and they're a dream to work with on the dyno, they're stable and reliable, plus they're excellent value for money.

Interesting, I thought the injectors were at their limit (i.e. 100%dc) on a 500 engine?

Edited by eliot on Sunday 23 September 09:42

[trackcar]

eliot said:

trackcar said:

If your car is standard and running lean then there's a fault that needs addressing first before you think about any other mods .. no std TVR in good working order has ever run lean on my dyno, this is desite what you may read about TVR runnin lean .. I have never ever witnessed it .. if there's ever been a fuelling isue it's always beeen because there has been a fault on the car.. usually the fuel pressure regulator, but sensors, badly set throttle pot, air flow meter etc can call cause fuelling issues.

If you get your car fixed and still decide that you want to go aftermarket management (and it's a good first step epsecially if youre considering a tuning upgrade route in stages with your car) then the emerald is a very very good ECU to go for. I've fitted many of these, and mapped many more and they're a dream to work with on the dyno, they're stable and reliable, plus they're excellent value for money.

Interesting, I thought the injectors were at their limit (i.e. 100%dc) on a 500 engine?

Edited by eliot on Sunday 23 September 09:42

Nowhere near .. I have griff 500s making 340/350hp* on std injectors .. that's the limit though. Interestingly one car we ran on Bosch injectors and it actually lost hp!

• one car independantly verified on 3 different rolling roads

[eliot]

trackcar said:

Nowhere near .. I have griff 500s making 340/350hp* on std injectors .. that's the limit though. Interestingly one car we ran on Bosch injectors and it actually lost hp!

• one car independantly verified on 3 different rolling roads

what spec are the std injectors then? Not spoiling for a fight, but i thought they were somthing like 19lbs or something - which comes up short for 340bhp?

[Else]

eliot said:

trackcar said:

Nowhere near .. I have griff 500s making 340/350hp* on std injectors .. that's the limit though. Interestingly one car we ran on Bosch injectors and it actually lost hp!

• one car independantly verified on 3 different rolling roads

what spec are the std injectors then? Not spoiling for a fight, but i thought they were somthing like 19lbs or something - which comes up short for 340bhp?

Mine are hitting just over 95% dc at 330 bhp, looking to change them over the winter (along with some other bits )

Andy