Decat and flat spot !!

[so called]

I recently had my Tuscan 2 decatted.
I didnt have it rechipped and found it to be OK except for a "little" flat spot.
I decided to have the chip changed to sort that our but now I am seeing a larger flat spot very noticeable in 3rd gear betwee 2 and 3k revs.

Could this be a tuning issue or could it be a bad chip ?
It was checked in November and is in again for a 12k service now but just wondered what may be the cause.

Thanks,
Tony.

[TVR_owner]

so called said:

I recently had my Tuscan 2 decatted.
I didnt have it rechipped and found it to be OK except for a "little" flat spot.
I decided to have the chip changed to sort that our but now I am seeing a larger flat spot very noticeable in 3rd gear betwee 2 and 3k revs.

Could this be a tuning issue or could it be a bad chip ?
It was checked in November and is in again for a 12k service now but just wondered what may be the cause.

Thanks,
Tony.

I have, after a period of doubt reagrding decats and chipping, decatted and chipped my Tuscan - it will be going back to standard as the engine does not work correctly without the back pressure.

[T450t]

TVR_owner said:

so called said:

I recently had my Tuscan 2 decatted.
I didnt have it rechipped and found it to be OK except for a "little" flat spot.
I decided to have the chip changed to sort that our but now I am seeing a larger flat spot very noticeable in 3rd gear betwee 2 and 3k revs.

Could this be a tuning issue or could it be a bad chip ?
It was checked in November and is in again for a 12k service now but just wondered what may be the cause.

Thanks,
Tony.

I have, after a period of doubt reagrding decats and chipping, decatted and chipped my Tuscan - it will be going back to standard as the engine does not work correctly without the back pressure.

In what respect John as Alister decated mine and re chipped it when it was rebuilt and he seemed to get it just fine when he had it on the rollers.

[Robertjp]

Cant say i noticed a flat spot with a decat but i had the Throttle body problems to contend with, once i sorted those the car came alive.

I then had the decat chip from TVR Power fitted and Dom loaded a map on in front of me, suggesting it was a good map, though im not sure just how many he may have, it made a noticable difference, cant say i have detected a flat spot really, i dont tend to try and pull from low revs in 3rd though...normally drop a cog i think?

[Trainspotter]

I decatted my S a few weeks ago and haven't noticed any flat spots or loss in performance. Not a big fan of the slight raspy note added to the exhaust, but the fireworks more than make up for it. It's running a standard S map and no plans to add a decat chip.

[TVR_owner]

T450t said:

TVR_owner said:

so called said:

I recently had my Tuscan 2 decatted.
I didnt have it rechipped and found it to be OK except for a "little" flat spot.
I decided to have the chip changed to sort that our but now I am seeing a larger flat spot very noticeable in 3rd gear betwee 2 and 3k revs.

Could this be a tuning issue or could it be a bad chip ?
It was checked in November and is in again for a 12k service now but just wondered what may be the cause.

Thanks,
Tony.

I have, after a period of doubt reagrding decats and chipping, decatted and chipped my Tuscan - it will be going back to standard as the engine does not work correctly without the back pressure.

In what respect John as Alister decated mine and re chipped it when it was rebuilt and he seemed to get it just fine when he had it on the rollers.

Mark,
Maybe something beyond S spec works with different cam timing etc, in my case I'm conviced its a retrograde step. If Mr Beardy has been involved with yours, I'm sure all will be well.

[so called]

Thanks for the feedback. Its been very interesting.
If mine isnt sorted in the next 2 weeks then I will go back to cats before my trip to Spain in June.
Thanks,
Tony.