Discussion
Classic chim, absolutely my reason I'm pi$$ed off with a certain TVR 'specialist' as when my car had a few upgrades I supplied genuine Bosch 'white' injectors. Flow matched to 365ccm. I asked them to fit them and they didn't! They said my car would be over fueled.
My words were they'll be fine if tuned to reduce the duty cycle!!!!!
Just ignored me!! As a result I've now got 8 brand new Bosch injectors sitting in a bag.
One day I'll fit them and get the car mapped PROPERLY!!
Cost me near £400 for a bag of injectors sitting idle.
My words were they'll be fine if tuned to reduce the duty cycle!!!!!
Just ignored me!! As a result I've now got 8 brand new Bosch injectors sitting in a bag.
One day I'll fit them and get the car mapped PROPERLY!!
Cost me near £400 for a bag of injectors sitting idle.
My car has.....
NO AFM.
NO distributor.
NO stepper motor.
Has....coil packs etc.
Carbon trumpets
Act exhaust manifolds.
Act Y pipe..
Kent 885 cam..
Adjustable Vernier cam timing.
That's exactly WHY I strongly suggested and insisted the uprated injectors get put in and mapped accordingly..
I was ignored!!
Told, 'id have to map it twice'.
Twice??!!
Put the Bosch whites in and map it..
Still F'in charged me £1100 to map it on bog stock injectors!!!!!!
NO AFM.
NO distributor.
NO stepper motor.
Has....coil packs etc.
Carbon trumpets
Act exhaust manifolds.
Act Y pipe..
Kent 885 cam..
Adjustable Vernier cam timing.
That's exactly WHY I strongly suggested and insisted the uprated injectors get put in and mapped accordingly..
I was ignored!!
Told, 'id have to map it twice'.
Twice??!!
Put the Bosch whites in and map it..
Still F'in charged me £1100 to map it on bog stock injectors!!!!!!
spitfire4v8 said:
I can't see the plenum spacer making any difference, caveat : I've never done the exact test back to back, but have seen plenty of cars with them on and they just make the power you expect and the drivability you expect. It won't hurt anything but it's not going to set the performance world alight. Just watch bonnet clearance from the extra height of the plenum now.
The injectors would have been a nice fit, take some advantage of the better misting / mixture presentation. You have per-bank lambdas so you're probably running batch fired injection , so some of the benefit is lost from fuel standing in a stagnant port. I've never ever measured a power boost from fine mist injectors in the rover despite what you might read. But they often improve cold starting, and there *might* be some economy / smoothness benefit but again you're batch fired so some of those benefits are lost.
1100 pounds for mapping ? Even allowing for the tax man's cut that's 900 pounds for the mapper ... was that just mapping or was there other work also done? There's often more to these stories.
I had lots of work done that was itemized. The injectors would have been a nice fit, take some advantage of the better misting / mixture presentation. You have per-bank lambdas so you're probably running batch fired injection , so some of the benefit is lost from fuel standing in a stagnant port. I've never ever measured a power boost from fine mist injectors in the rover despite what you might read. But they often improve cold starting, and there *might* be some economy / smoothness benefit but again you're batch fired so some of those benefits are lost.
1100 pounds for mapping ? Even allowing for the tax man's cut that's 900 pounds for the mapper ... was that just mapping or was there other work also done? There's often more to these stories.
One itemized charge was £875 plus vat specifically for mapping. That 875 was JUST for the mapping.
I was told (hmmmm) my car spent 2 days on the Dyno.
And your comments on the new injectors going in to take advantage of lower impudence and better spray pattern was what I wanted.
Bearing in mind the standard injectors run at 100% and are on the edge of their limits I thought larger flow rate ones with a better pattern turned down a little would be better.
Better economy and smoother etc.
My logic was ignored. (Even after MANY telephone conversations prior to my car going there).
One day I'll fit the new ones and have what I wanted.
eliot said:
what ecu is it - if if has wideband lambdas you should be able to either log or get the live data of the afr - or take it to a RR
Mbe 9a8 ECU. Wide band lambdas in each exhaust manifold. Today I spoke to a company who can remap it. No time soon due to thousands spent on getting the car to where it is now.
I spoke to them and they have tuned a supercharged Griffith with the same ECU.
'can you fit the injectors and remap it'? I asked.
Absolutely no problem Sir. Was the answer.
Estimated 2-3 hours on the hub Dyno.
Still beyond livid I was told my car spent 2 days on the Dyno being mapped on stock injectors..
One day I'll tell the whole story about my experience with 'them'. A very long way from a good experience.
The car has 101k miles. Engine was fully rebuilt. New everything inside other than the crank rods and pistons. New bearings and seals everywhere!!!
It's a Griffith 500hc.
Without any doubt, yes, the car is much faster than before it went in!! Drives MUCH smoother, much better response and for sure, more torque.
As for why was it on the Dyno for 2 days? No idea!! I asked why and got a bundle of excuses.
Seems the problem was whoever mapped it doesn't know what they were doing. Simple as that.
It's a Griffith 500hc.
Without any doubt, yes, the car is much faster than before it went in!! Drives MUCH smoother, much better response and for sure, more torque.
As for why was it on the Dyno for 2 days? No idea!! I asked why and got a bundle of excuses.
Seems the problem was whoever mapped it doesn't know what they were doing. Simple as that.
Edited by Harvy500 on Wednesday 21st February 23:57
Johno said:
Thanks again Harvy.
Mines running the 4 hole Siemens injectors from ~12 years ago. Haven't had a dizzy, AFM etc for the same amount of time. I only run a single wideband, two would have been better perhaps.
Mine did 315 (fly) at Emeralds road years ago (K3 Emerald ECU) and is currently about to have an ACT twin plenum fitted (was a 72mm), purely for the throttle response, I'm not looking for any extra power. It's then off back to see Dave and the team at Watton to be remapped with the revised set up.
The injectors are off for a clean and service currently, as for a few years the car was stored whilst I was abroad and having recommissioned it with TVR101 (outstanding team) I'm getting round to a few jobs/mods I always wanted to get done before we went away.
Another option for injectors is worth considering, as tech moves on. However, as highlighted, whether there are gains in performance and what kind of performance gains they give is up for debate. Low speed throttle response, cold start etc or full throttle runs, the former two are interesting, the latter not so much.
I'd agree also, that once you get to where you are, more gains are big money for any significant steps. 300-320 (fly) suits the car I find if it's mapped well and the torque is accessible etc.
Would your 72mm plenum be looking for a home? I'm wanting one. Mines running the 4 hole Siemens injectors from ~12 years ago. Haven't had a dizzy, AFM etc for the same amount of time. I only run a single wideband, two would have been better perhaps.
Mine did 315 (fly) at Emeralds road years ago (K3 Emerald ECU) and is currently about to have an ACT twin plenum fitted (was a 72mm), purely for the throttle response, I'm not looking for any extra power. It's then off back to see Dave and the team at Watton to be remapped with the revised set up.
The injectors are off for a clean and service currently, as for a few years the car was stored whilst I was abroad and having recommissioned it with TVR101 (outstanding team) I'm getting round to a few jobs/mods I always wanted to get done before we went away.
Another option for injectors is worth considering, as tech moves on. However, as highlighted, whether there are gains in performance and what kind of performance gains they give is up for debate. Low speed throttle response, cold start etc or full throttle runs, the former two are interesting, the latter not so much.
I'd agree also, that once you get to where you are, more gains are big money for any significant steps. 300-320 (fly) suits the car I find if it's mapped well and the torque is accessible etc.
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