As above, i am trying to find out why the 115 can aparently be tunned to 160+ bhp

But the the 105 as standerd will not take a map over the 150+bhp

Is it a diffrent fueling system,ECU set up ??? do they have the same intercooler set up,turbo etc.

All intup welcome

Cheers Scotty

could be because of the difference of 10 horses between the 2 motors

how do you know the 105's ecu will not take the same map as the 115's ecu? i cant think of any reason it would not, although the RR results for both on the same map would be different due to intake restrictions on the 105.

bandido41 said:

could be because of the difference of 10 horses between the 2 motors

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But when being tuned to maximum capacity would it mater what they had to start with being they are basicly the same block.

@ Jug i have heard of a stilo that has been mapped to 163bhp.

But mines will not go over 150+.

are you saying the stilo got 163bhp and you only got 150bhp and you both used the exact same map and had the figures from the exact same rolling road on the same day? anything else is an unfair comparison.

if you take 2 identicle cars, they will have very different power outputs as standard. the manufacturer could quote 100bhp, but in reality one car could have 90bhp and the other could have 110bhp. most of them would be in the range of 96-104bhp but you never know what you get when you biy one, its a bit of a lottery. then over time the car's power will change depending on the health of it.

give 2 identicle cars the same remap and the difference in peak power may be larger or smaller than it was to begin with. there is no guaranteed increase in peak power from any given remap, it depends on so many things.

mostly the efficiency of your engine, which depends on the balance, the friction in the engine, the compression, etc etc. then you have transmission losses that are different on every car. the age of your car, the condition of it, how well serviced it has been, they can all have an impact.

then you need to consider the difference each rolling road will give, and the huge different possible depending on how the rolling road is used.

for example your 150bhp could be 170bhp on a different rolling road if you know how to fiddle it, similarly it could be 130bhp on another rolling road.

so as i originally said, unless you both used the exact same map and the exact same rolling road on the same day it is not possible to compare. and even if you did, a comparison is still not fair because each car is different.

scottyJTD said:

As above, i am trying to find out why the 115 can aparently be tunned to 160+ bhp

But the the 105 as standerd will not take a map over the 150+bhp

Is it a diffrent fueling system,ECU set up ??? do they have the same intercooler set up,turbo etc.

All intup welcome

Cheers Scotty

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I'm just guessing here but I don't think it's about how high either can be tweaked, I think it's more to do with how much tweaking they can take - in both cases, the tweak is 45bhp.
Also, as said earlier, the bhp quoted may just be an approximate so the 115 may be as much as 120, taking the maximum mod to 165bhp?

We all know that health & safety love manufacturers to give huge margins for error - and as men, we all know about sell by & best before dates:devil: so it may be the same with engines, initially being set up well within operating tolerances & by tweaking it, you are taking it closer to its limit or perhaps shortening its lifespan?

Im aware of the actual bhp being slightly of either way,i gauge mines being at around 150+ as the map in my car is the same one used on all JTD's opting for the 150 map from this company.

I had two diffrent not tried before maps above the 150 map on my car and neither would work,it cuts out at 31/2 revs and then cuts back in again when the revs drop,apparently the fuel was being cut,

I dont know the in's and outs of RR results,but suerly there cant be 20bhp of a diffrence from one to the other with the same car??? (can there)

Thanks for the reply's thus far

Cheers Scotty

jug said:

if you take 2 identicle cars, they will have very different power outputs as standard. the manufacturer could quote 100bhp, but in reality one car could have 90bhp and the other could have 110bhp. most of them would be in the range of 96-104bhp but you never know what you get when you biy one, its a bit of a lottery. then over time the car's power will change depending on the health of it.

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Not looking to get into a huge paragraph type war but I very much doubt the BHP varies as wildly as that.

From the new MJ engines the differences between the 1.3 70 and 90hp models is a Variable Geometry turbo.

I'd say both engine would have different heads, what engines do they come in as there is not 105 and 115 in stilo or Bravo that I can see.

Liam