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i think it has 3 inch exhaust on it i talked to tuner he said leave it for couple of weeks make sure everything runs smoothly then he said we can talk about more power but surely i can make more power than 410 hp safetly with that motor and turbos ?

So there's your answer. Its not a final, full power tune. Sounds like your tuner is being conservative to keep the risk of a blown motor/turbo failure/whatever to the minimum. If that's the case, then his opinion and approach should be respected.

3in is definitely too small for -5s and therefore sub-optimal. It would be worth getting a 3.5 or 4 in fitted before you take it back for the full power tune. Dont skimp on the cat.

1 page later the real truth is posted... *facepalm*

IF you were told it was deliberatly tuned that way, for a reason... What is the problem?

you know why its down on power a bit.What a waste of a thread.

Point to remember, just having a particular engine and turbo combo does not mean you will automatically make the power its capable of. So much depends on exhaust, intake, intercooler etc.

You are 100% right, that engine and turbo combo is capable of a lot more power, but if you do not have all the required supporting mods as suggested above then you will not make the power and the tuner can only tune with whatever is given to him. You really need to build a relationship with your tuner and tell him what you want, then he can do testing and find out what is limiting things.

the tuner didnt really tell me he said he didnt want to push it straight away anyways i understand now after i talked to him so it wasnt a waste of thread all this info is good to know thanks guys

but should i deff go bigger exhaust ? i will deff check to size is 3'' i have not measured it yet the intercooler is huge thickness wise and length must be a trust or something i dont know cant see a brand

Umm... Just to be clear ....

Are you attempting to pick a 10hp difference (or less than 3% difference) between two different dynos at two different workshops? Presumably on two different days?

Whatever the numerical difference, there were have to be a whole lot of change in the power delivery to pick it up using the "seat of the pants" dyno as well.

+1

With possibly two different batches of fuel. 10hp is sweet FA.

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