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| Flow limit of 944 Turbo airbox and filter https://forums.tipec.net/viewtopic.php?f=25&t=21200 |
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| Author: | Wes [ Tue Mar 29, 2016 4:27 pm ] |
| Post subject: | Flow limit of 944 Turbo airbox and filter |
Does anyone know the flow limit in cfm or otherwise of the standard 944 Turbo air filter box and filter? I remember reading an article on the 968 airbox/filter and modifications but nothing for the turbo. |
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| Author: | 944 Man [ Tue Mar 29, 2016 5:38 pm ] |
| Post subject: | Re: Flow limit of 944 Turbo airbox and filter |
320bhp |
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| Author: | Wes [ Tue Mar 29, 2016 6:17 pm ] |
| Post subject: | Re: Flow limit of 944 Turbo airbox and filter |
944 Man wrote: 320bhp 944 Man, was this ever tested on a dyno etc.? Just wondering which is the highest flowing OEM Porsche airbox and filter? Any easy mods to get the figure higher? |
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| Author: | Richair [ Tue Mar 29, 2016 8:48 pm ] |
| Post subject: | Re: Flow limit of 944 Turbo airbox and filter |
See the JMG site, Jon has lots of useful info on their from his experience of tuning 951's. In my opinion the limiting factor is the AFM not the airbox. If going for big power then you should really upgrade the DME and therefore delete the AFM either by going for a MAF or MAP set up (I'll be doing the latter). |
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| Author: | pauly [ Tue Mar 29, 2016 9:28 pm ] |
| Post subject: | Re: Flow limit of 944 Turbo airbox and filter |
I've seen a picture of a 968 turbo RS in a magazine that reputedly has a lot more than 320 bhp. It looks like it has a standard 944 turbo airbox/panel filter. It didn't have the 944 snorkel though, instead it has a short duct to a NACA duct in the bonnet. That would suggest the long snorkel is a restriction rather than the airbox. |
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| Author: | 944 Man [ Wed Mar 30, 2016 5:11 pm ] |
| Post subject: | Re: Flow limit of 944 Turbo airbox and filter |
Lifted straight from a saved copy of the information on JM's site Wes. No direct experience or empirical evidence. Simon |
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| Author: | pauly [ Thu Mar 31, 2016 12:33 pm ] |
| Post subject: | Re: Flow limit of 944 Turbo airbox and filter |
I've never seen a pic of a 944T intake ducted through the bonnet so JMG's figure is probably right for a standard air box. Supposedly around half of the gains from MAF kits are related to the less restrictive air filter plumbing. |
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