Remap or New ECU?

[Biggriff]

I still get miffed that everytime I make any mods to my car and need a remap it's £450 a pop. I am now thinking that an ECU that my local specialists (who are very experienced at mapping) will be the way to go.

Any views?

BG

[Mike Tuckwood]

Biggriff said:

I still get miffed that everytime I make any mods to my car and need a remap it's £450 a pop. I am now thinking that an ECU that my local specialists (who are very experienced at mapping) will be the way to go.

Any views?

BG

Stop changing stuff?
I can understand being charged if a major component is being changed, but surely even if you change ECU, you're still going to need a remap if you change anything thereafter in much the same vein?

If only relatively small things are changed, we don't charge a for full remap, if something has been altered which will affect the whole map, obviously that means a complete re-work of the whole map, but again, whichever ECU you're on, changing stuff means remapping to a varying extent?



Mike

[ThatPhilBrettGuy]

As Mike says in theory you should map every time you make a change, regardless of the ECU.

I think the real issue is you see so many other cars just bolt things on and seem to get away with it. The truth of the matter is generally they don't.

Case in point. Ferrari 360's that have Tubi exhausts put on. They sound great and in the upper rev ranges work well. But, put one on a dyno and look at all the low down torque that's now missing and the top end power isn't actually any better. People think it is because the differential between low and high revs is much bigger. The truth is that the top end is the same but the low end is worse.

You can map around this, but most people don't think it's wrong. We're just better educated than that

[Biggriff]

I dont like making changes without understanding the effect or even worse ruining my engine.

As for stopping changing things it's not in my nature. Even my baby buggy had hot wheels on it.

[Gadgeroonie]

rather than make incremental modifications - just go for it and build the engine you want

it actually works out cheaper in the long run.

what mods have you made to the car so far ?

[Biggriff]

T28VNT's (variable nozzle design) - Bstard to fit!
Proalloy intercooler
hard pipe kit and bov
Roush exhaust and cats
fuel pump
oil to water cooler
Turbohoses header tank
(Engine internals to M400 spec)

Now putting up the boost to 1 bar and have next series of mods in hand which are bigger injectors and a completely new inlet manifold design (being proved by another member and then we will manufacture in carbon)

[sjc]

ThatPhilBrettGuy said:

As Mike says in theory you should map every time you make a change, regardless of the ECU.

I think the real issue is you see so many other cars just bolt things on and seem to get away with it. The truth of the matter is generally they don't.

Case in point. Ferrari 360's that have Tubi exhausts put on. They sound great and in the upper rev ranges work well. But, put one on a dyno and look at all the low down torque that's now missing and the top end power isn't actually any better. People think it is because the differential between low and high revs is much bigger. The truth is that the top end is the same but the low end is worse.

You can map around this, but most people don't think it's wrong. We're just better educated than that

NEWSFLASH !!!Phil and Mike in agree shock!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[ThatPhilBrettGuy]

sjc said:

ThatPhilBrettGuy said:

As Mike says in theory you should map every time you make a change, regardless of the ECU.

I think the real issue is you see so many other cars just bolt things on and seem to get away with it. The truth of the matter is generally they don't.

Case in point. Ferrari 360's that have Tubi exhausts put on. They sound great and in the upper rev ranges work well. But, put one on a dyno and look at all the low down torque that's now missing and the top end power isn't actually any better. People think it is because the differential between low and high revs is much bigger. The truth is that the top end is the same but the low end is worse.

You can map around this, but most people don't think it's wrong. We're just better educated than that

NEWSFLASH !!!Phil and Mike in agree shock!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ooo is that free beer you're offering?

[Gadgeroonie]

so you have variable nozzle ex housings ?

thats pretty interesting - i don't know of any performance cars that have them fitted

what car did they come off ?

[sjc]

ThatPhilBrettGuy said:

sjc said:

ThatPhilBrettGuy said:

As Mike says in theory you should map every time you make a change, regardless of the ECU.

I think the real issue is you see so many other cars just bolt things on and seem to get away with it. The truth of the matter is generally they don't.

Case in point. Ferrari 360's that have Tubi exhausts put on. They sound great and in the upper rev ranges work well. But, put one on a dyno and look at all the low down torque that's now missing and the top end power isn't actually any better. People think it is because the differential between low and high revs is much bigger. The truth is that the top end is the same but the low end is worse.

You can map around this, but most people don't think it's wrong. We're just better educated than that

NEWSFLASH !!!Phil and Mike in agree shock!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ooo is that free beer you're offering?

Now thats an interesting one, don't want to go off topic on Biggriffs thread so have a look here.
http://www.pistonheads.com/gassing/topic.asp?h=0&a...

[david.mt]

Sort of related to this thread but I presume that an upgrade to the hard pipe kit will not require a remap - surely it can't have a major change in airflow?

[ThatPhilBrettGuy]

david.mt said:

Sort of related to this thread but I presume that an upgrade to the hard pipe kit will not require a remap - surely it can't have a major change in airflow?

Some would say it's a zero change in airflow That'll be fine.

[Biggriff]

It will be the VNT's that will trigger the remap in this case.

Yes I do have variable nozzle turbo's. They are the first customer set from TT after they spent a long time setting them up on a Cosworth V6. The delivery is very smooth and very full. Makes it feel less rurbocharged and more NA.

Here is some idea of the physical size compared to the T25.

http://i191.photobucket.com/albums/z279/BigGriff20...


I know doing the engine mods in one go works out cheaper but then my wife sees the bill and I get divorced.....

Edited by Biggriff on Thursday 26th March 11:35

[mgbond]

Hi Rich,

Can you PM me details on the water/air oil cooler.

Cheers

Bondy

[Biggriff]

Martin

They come from a company in the states called Race Precision but are no longer listed on their website. They did originally come from Mocal in the UK so I guess speaking to them should be a good starting point.

I will post piccies if anyone is interested?

BG

[BCA]

ThatPhilBrettGuy said:

Case in point. Ferrari 360's that have Tubi exhausts put on. They sound great and in the upper rev ranges work well. But, put one on a dyno and look at all the low down torque that's now missing and the top end power...

...that is also missing. I have never seen a rarri do the numbers (only seen 348s/355s/360s/360CS's on there though) I hear the newer cars are alot better, I really hope that is the case.

[Biggriff]

Spoke to the Race Engineers and they are fitting a new ECU. We worked out that with all the future upgrades planned that having the ECU destiny in our own hands would save money in the long run.

[Gadgeroonie]

its a good move the MBE ecu is not the most elegant thing i have ever had to work with

quite limited in its outputs and the interface was developed by somebody who didn't understand cars IMHO