Result of Re-Map + Extras

Result of Re-Map + Extras

Author
Discussion

Andy Pandie

Original Poster:

1,164 posts

215 months

Sunday 5th August 2012
quotequote all
Went down a slightly different route than some with my Tuscan, i.e no major engine parts replaced, to ovecome the problem of lean running top end as picked up on two independant RR sessions.

Having spoken to Jason at Str8six last year the 'long' term plan was to change the injectors for 'Green Tops', then map to match. I also wanted to have a de-cat and fit an ACT performance Airbox, so the new map would need to take these into account, but the main aim was to have it running right.

The work was completed this week, and to say I'm impressed with the result is an understatement, big thank you to Jason and his team at Str8six and Dom and his team at TVR Power, I never expected the figures below;

Note these are at the wheels,


I know it's not in the same ball park as a 4.3/4.5 or the FFF, but I'm pleased anyway smile

Cheers

Andy 'P'

Hollowpockets

5,908 posts

222 months

Sunday 5th August 2012
quotequote all
Looks good, A good way to approach it I'd say. Unless the engine needs rebuilt I can't see a point in the great expense for the gains, 356 at the wheels must be around the 390 mark at the flywheel.

Were the Sagaris fitted with the same injectors that are related to the leaning out problem?

Graham

Andy Pandie

Original Poster:

1,164 posts

215 months

Sunday 5th August 2012
quotequote all
Hollowpockets said:
Looks good, A good way to approach it I'd say. Unless the engine needs rebuilt I can't see a point in the great expense for the gains, 356 at the wheels must be around the 390 mark at the flywheel.

Were the Sagaris fitted with the same injectors that are related to the leaning out problem?

Graham
The Sagaris and Tuscan S are the same engine, so would think TVR used the same injectors. Can't tell you what the fly figure is. At SRR when all this kicked off I got a wheel figure of 293.2HP and 353.1HP at the fly, but how that was derived I have no idea confused

Don1

16,047 posts

214 months

Sunday 5th August 2012
quotequote all
Looks like a good strong engine, nice one. I have to say the ACT stuff works well IMHO...

Andy Pandie

Original Poster:

1,164 posts

215 months

Sunday 5th August 2012
quotequote all
Don1 said:
Looks like a good strong engine, nice one. I have to say the ACT stuff works well IMHO...
Thanks Don, not as impressive as your beast, but definitely happy with it. Agree with your comment about ACT products, Tim knows his stuff

Don1

16,047 posts

214 months

Sunday 5th August 2012
quotequote all
Stronger than mine was before the FFF - personally I'd be very happy with your result. smile

collingbroon

382 posts

197 months

Monday 6th August 2012
quotequote all
Andy Pandie said:
Hollowpockets said:
Looks good, A good way to approach it I'd say. Unless the engine needs rebuilt I can't see a point in the great expense for the gains, 356 at the wheels must be around the 390 mark at the flywheel.

Were the Sagaris fitted with the same injectors that are related to the leaning out problem?

Graham
The Sagaris and Tuscan S are the same engine, so would think TVR used the same injectors. Can't tell you what the fly figure is. At SRR when all this kicked off I got a wheel figure of 293.2HP and 353.1HP at the fly, but how that was derived I have no idea confused
I would work that out at more like 418hp at the fly. It's about 15% that's lost. Very impressive I must saythumbup

MrChips

3,267 posts

216 months

Monday 6th August 2012
quotequote all
Great result Andy smile Do you still have the original RR printouts from before the work?

I'm considering a bespoke map once my engine's run in and not sure whether to go for one of the newer syvecs/mbe units or just a remap using the current mbe.

Have you noticed an improvement in throttle response/driveability etc?

Andy Pandie

Original Poster:

1,164 posts

215 months

Monday 6th August 2012
quotequote all
Hi Dave,
Yes still have the original RR printouts, I'm sad and keep stuff like that, on both readouts there is a noticeable dip in the fuelling part way through the curve, and then it drops off towards the top end. Not got an electronic copy to hand so can't post it at the moment.

The throttle response is instant and pulls strongly right through the rev range, gave me that tremble hand buzz biggrin A bespoke map was the only option open to me, no off the shelf available, but was the long term plan anyway, a generic chip is a great starting point but in my opinion these are hand built engines and therefore have slightly different characteristics. For me she is a totally different beast, I'm looking for excuses to go out in the evenings, well worth the £650 and a tank of V-power.

Graaf

169 posts

171 months

Thursday 16th August 2012
quotequote all
inspired by you I went to the dyno station last Saturday and they recorded 385bhp and 420nm torque..you can imagine I was happily suprised ! Now I am even more keen to find the previous owner :-)

natben

2,745 posts

237 months

Thursday 16th August 2012
quotequote all
Graff, are you sure about that torque figure, 385bhp is a great figure,but the torque figure is about 100nm higher that any other 4.0L Tuscan S.

George


Robertjp

2,281 posts

231 months

Thursday 16th August 2012
quotequote all
Andy Pandie said:
Hi Dave,
Yes still have the original RR printouts, I'm sad and keep stuff like that, on both readouts there is a noticeable dip in the fuelling part way through the curve, and then it drops off towards the top end. Not got an electronic copy to hand so can't post it at the moment.

The throttle response is instant and pulls strongly right through the rev range, gave me that tremble hand buzz biggrin A bespoke map was the only option open to me, no off the shelf available, but was the long term plan anyway, a generic chip is a great starting point but in my opinion these are hand built engines and therefore have slightly different characteristics. For me she is a totally different beast, I'm looking for excuses to go out in the evenings, well worth the £650 and a tank of V-power.
Looks like a great result Andy, how much were the injectors if you dont mind me asking? The ACT box is £1k isnt it? So im guessing around £2k for this improvement?

I think Clive F has done similar with the exception of the higher lift RND cams - and got to the 400bhp mark which is also a fab result...looking forward to when Joolz releases that upgrade as a kit....

Laser Sag

2,860 posts

249 months

Thursday 16th August 2012
quotequote all
natben said:
Graff, are you sure about that torque figure, 385bhp is a great figure,but the torque figure is about 100nm higher that any other 4.0L Tuscan S.

George
George

I wonder if you are thinking in lb/foot when Graff is quoting nm, 420 nm would be around 310 lb/ft

natben

2,745 posts

237 months

Thursday 16th August 2012
quotequote all
Thanks Laser,for clearing that up.
I shouldn't really comment on things I don't understand!! but torque of 310lb/foot would be more like the figures I have seen for a 4.0L SP6.

George

Andy Pandie

Original Poster:

1,164 posts

215 months

Thursday 16th August 2012
quotequote all
Graaf said:
inspired by you I went to the dyno station last Saturday and they recorded 385bhp and 420nm torque..you can imagine I was happily suprised ! Now I am even more keen to find the previous owner :-)
Great figures thumbup

Robertjp said:
Looks like a great result Andy, how much were the injectors if you dont mind me asking? The ACT box is £1k isnt it? So im guessing around £2k for this improvement?

I think Clive F has done similar with the exception of the higher lift RND cams - and got to the 400bhp mark which is also a fab result...looking forward to when Joolz releases that upgrade as a kit....
Rob,

Basic total = £2,260 including V.A.T

ACT Performance Air Box - £1,050
Green Top Injectors - £430
Re-Map - £780

Bear in mind I also had Str8six fit the Air Box, supply/fit DeCats, and got them to transport the car to and from Coventry for the re-map, so my total was just shy of the £3k mark, still think it was money well spent biggrin



spitfire4v8

4,017 posts

187 months

Thursday 16th August 2012
quotequote all
awesome numbers from the tvr power dyno. you should take it back to surrey RR now and get an after graph overlaid over your previous run thumbup

Andy Pandie

Original Poster:

1,164 posts

215 months

Thursday 16th August 2012
quotequote all
spitfire4v8 said:
awesome numbers from the tvr power dyno. you should take it back to surrey RR now and get an after graph overlaid over your previous run thumbup
That's the plan, when I'm a not so busy, a before and after comparison on the same RR yes

Graaf

169 posts

171 months

Friday 17th August 2012
quotequote all
Laser Sag said:
George

I wonder if you are thinking in lb/foot when Graff is quoting nm, 420 nm would be around 310 lb/ft
Exactly Laser ! So very close the the claimed factory figures and much morethen I expected, still have to install the sportcats and wondering about the airfilter options, geuss that 400bhp will come in sight :-)


Edited by Graaf on Friday 17th August 11:02

kcc

339 posts

211 months

Sunday 19th August 2012
quotequote all
Graaf said:
inspired by you I went to the dyno station last Saturday and they recorded 385bhp and 420nm torque..you can imagine I was happily suprised ! Now I am even more keen to find the previous owner :-)
Is the BHP fly or wheels ?.

Don1

16,047 posts

214 months

Sunday 19th August 2012
quotequote all
It would have to be flywheel figures.