Opel Astra z22se Tuning
- Thread starter dedko
- Start date
astra22bertoneauto
Senior Member
so what have you got after tuning?
ATOM X
Senior Member
I am shocked by the low results, I feel your torque values should have been higher with your current architecture
granted you still have original exhaust manifold BUT I have seen a lot better figures using standard air-box
The breathing is thwarting the engine
This excerise proves how important a good inlet & exhaust tract is to thermodynamics
granted you still have original exhaust manifold BUT I have seen a lot better figures using standard air-box
The breathing is thwarting the engine
This excerise proves how important a good inlet & exhaust tract is to thermodynamics
astra22bertoneauto
Senior Member
I have a standard air box de-restricted with a high flow panel filter that seems to do the job nicely. Also I have a 4-1 manifold with 2.5" system. No other mods yet but i find at the moment its much more responsive than before!
Quite a few people on here dont recommend the cone filter.
Quite a few people on here dont recommend the cone filter.
I found a rolling road report which is comparable to mine, both before and after the 2.4 inlet manifold.
I do realise that I'm comparing apples to oranges (different altitude, fuel RON, temperature), but the shape of the graph is uncannily similar.
One significant difference: This particular car has a sports catback fitted.
http://www.crateenginedepot.com/store/Cobalt-24-Intake-Kit-W67C144.aspx
I do agree with his sentiments; the car does feel more responsive and power delivery certainly feels more linear.
I do realise that I'm comparing apples to oranges (different altitude, fuel RON, temperature), but the shape of the graph is uncannily similar.
One significant difference: This particular car has a sports catback fitted.
http://www.crateenginedepot.com/store/Cobalt-24-Intake-Kit-W67C144.aspx
I do agree with his sentiments; the car does feel more responsive and power delivery certainly feels more linear.
ATOM X
Senior Member
dedko said:
your confiuration is a good base, that should be easily capable of generating 200bhp
the limiting factors be they inlet tract and/or exhaust are having a strangling effect
QUESTION if you brick up using airbricks the intake & exhaust on a jet engine will it function?
ANSWER Yes but with seriously reduced performance
Yep, it's true Vocky I still have the standard outlet. The exhaust mani and pipe is next on my to-do list. 
Consider it phase 2 ... it'll be a month or so before I've the readdies.
There's a guy here in Holland who'll do a custom full exhaust (inc fitting and VAT) for €800 ≈ £600
But I'll need to supply a mani and downpipe.
Atom, I had expected greater results too. With the new inlet and tb allowing more air, I'd expected a small increase in power/torque. Although, as Blue_2.2 states, the restrictive exhaust is putting a dampener on things.
Anyways. first things first; get the original airbox (deristricted) back on and see if I notice a difference. The current cone is nothing more than a warm air intake!roblem:
(Honestly, I'll miss the note from the cone filter.)
Consider it phase 2 ... it'll be a month or so before I've the readdies.There's a guy here in Holland who'll do a custom full exhaust (inc fitting and VAT) for €800 ≈ £600
But I'll need to supply a mani and downpipe.
Atom, I had expected greater results too. With the new inlet and tb allowing more air, I'd expected a small increase in power/torque. Although, as Blue_2.2 states, the restrictive exhaust is putting a dampener on things.
Anyways. first things first; get the original airbox (deristricted) back on and see if I notice a difference. The current cone is nothing more than a warm air intake!
roblem: (Honestly, I'll miss the note from the cone filter.)
Minor update:
I'm off on a long road trip through a few countries in Europe and I reckoned that driving a couple of thousand miles with the drone and noise from the warm-air-intake (still dunno wtf I was thinking notsure.gif when I put that in) would drive me nuts.
So, I decided to swap out the WAI and put back the original airbox.
And all I can say is, gentlemen, the torque is back! showo..
I'm off on a long road trip through a few countries in Europe and I reckoned that driving a couple of thousand miles with the drone and noise from the warm-air-intake (still dunno wtf I was thinking notsure.gif when I put that in) would drive me nuts.
So, I decided to swap out the WAI and put back the original airbox.
And all I can say is, gentlemen, the torque is back! showo..