Poor Dyno result

[Poacher]

Hi Guys,

Here is my Dyno result. Still trying to figure out the issue. So far it's most likely exhaust. I have stock except RPS tip and need to remove cat still :(

Evo 8MR turbo 10.5
565 sti injectors
timing has been dropped out possibly not enough
fuel tuned
Inj running at 504cc (might adjust to 513 but doubt this is causing the power issue)
Stock cams/intake manifold etc.
21psi
FMIC
BOV


Johno

 

[^pomen_GTR^]

stock cam and stock exhaust likely the main source of restriction after u change to bigger turbo and injector....

 

[Poacher]

I might check the coil packs and plugs too just in case

 

[stutzedward]

U need Evo cams at least n yes, exhaust too. Then u'll see around 230-240 whp.

 

[Poacher]

2.5" exhaust ok? o2 housing is 3" s/s off turbo

 

[4gbanger]

stock cam wont work well with E8 turbo.. better get E7 or E7gta turbo to get better result with stock cam.. but then when look at the graph, u better check your ignition n Air fuel ratio.. gud luck man..

 

[stutzedward]

With TD05, u need higher lift to allow more gas travel. Stock cam is really low and opens shorter period of time. So Evo cams will be best for td05.

 

[Poacher]

Ill look out for some stock cams they come up from time to time. Evo 7/8 would be best. I removed CAT flowing better now sounds nicer too. Still fluctuating at the top like a faulty o2 sensor (but fueling is fine) so might be spark plugs or coils. ill do some tests next weekend.

 

[GEFORCEXTREME]

I'm thinking your turbo is out of breath, there is some 5 psi drop from peak boost to boost at high RPM.

 

[Poacher]

No I made the drop on the tune, until i fix the issues. plus it's more safer to have slightly drop :)

 

[stutzedward]

Did it miss-fire on high rev? Check yr plugs bro.

 

[Poacher]

Just bought new plugs, running smoother. Also cleaned MAF, still got more research to do :)

 

[stutzedward]

R u going to re-dyno?

 

[Jun_EK9]

10.9 is too rich
pls ensure the plug is right for evo...big head not small head
pls check the turbo shaft n fin as well

 

[Poacher]

Has anyone got any excel Logs they can send me to compare? with similar mods, thanks

 

[4gbanger]

poacher, i learn something recently. refer to ur dyno graph, the shakey or rough line through out the RPM is because of the stock valve spring. change to evo or aftermarket to make the graph smoother thus is would definitely make ur revving smoother.