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Discussion Starter #1
I own a gt v6 2008 with 40000 km
I've done a few modification
1 . Act Carbon plenum and ferrari 360 throttle
2. Supersprint manifold and down pipes
Ive just done a dyno test and the result was very bad.
186.5 hp 22 kg
Any idea what could be the problem?
 

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Did you have a re-map after the mods ?....bolting goodies on without the correct supporting mods can sometimes have a detrimental effect on fueling/performance!!

Tapatalk from Galaxy S2
 

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Mine was rubbish & it turned out that the cambelt had been pretty much thrown in & the timing was way out, is yours due a service or has it been done recently?
 

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Discussion Starter #4
I haven't done mapping yet.
I first wanted to see what the mods gave me and then do mapping.
I think (maybe i'm wrong) that the mods alone should show some gain or even the same power, but instead
I lost 60 hp and 10 kg .
 

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Does it feeler slower than before you did the mods or does it feel the same?
 

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Supersprint manifolds? They are not cheap.....
 

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It feels a lot stronger .....but as you can see i'm wrongggg.
Did you have a run on the same dyno on a similar day (air pressure makes a difference) BEFORE you made those changes?


Some dynos are setup to give big numbers to keep people like you happy......!!
Others are setup properly to give accurate results.
 

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Discussion Starter #11
I'm notlooking for high numbers i'm only comparing this to the alfa numbers.
I will be more than happy if this are the results i should get, because the dyno is accurate as you say.
I drove the car and it feels great .
But i think that alfa are not wrong by 60 hp maybe 10 hp... as so i think there is a problem.
And you don't know me so by saying "to keep people like you happy" is not helpful.
 

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Discussion Starter #16
I'm from israel . So thank you for that.
But if it's only mapping i will sort it out by the end of the week.
The problem is that i think it's not just mapping.
Tommorow i'm going for all systems check up.
Just wanted to get some ideas of what the problem might be before tommrow so i can sleep well tonight :)
 

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Me personally is almost 100% sure it's a mapping issue, as when I had my catless manifolds fitted, followed by the ACT plenum she was down on power and running pretty damn crap tbh. Send your ECU off to Gus over in this country and he'll sort you out a similar map to mine.

:thumbs:

Edit - check for air leaks or your MAF, as a faulty MAF can through up issues.
 

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I would check the cam timing again,it is far too great a power loss to be down to just fuelling, which has been affected by the larger air intake/throttle body.Also check MAF and lambdas(did you have AFR measured while on dyno?):)
 

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Discussion Starter #20
Thank you beautiful busso might do that.
The service was done by mechanic in israel called scuderia tiltan. He is one of the best in israel, so no problem with that . He is more disappointed than me.
 
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