3" or 4" cai
02-02-2018, 09:11 AM
#271
Dyno time is booked for tomorrow afternoon and fortunately the shop is allowing me to make changes on the dyno within the hour.
I'll be able to provide numbers for the following:
1. Baseline stock AP1
2. Throttle body to 3.5" to 3.5" about 18" pipe for each section with one 90* bend. Places filter in the OEM location
3. Throttle body to 3.5" to 4" about 18" pipe for each section with one 90* bend. Places filter in the OEM location
4. If time permits, 3.5" to 3.5" to 4" 18" pipe for each section with two 90* bends, places filter in the fender well - not keen on this as I am in the PNW where it rains. Alot. And it would take a while to get it fitted - may be able to try it with the filter hanging out somewhere
No tuning will be done, but hopefully I make some power!
I'll be able to provide numbers for the following:
1. Baseline stock AP1
2. Throttle body to 3.5" to 3.5" about 18" pipe for each section with one 90* bend. Places filter in the OEM location
3. Throttle body to 3.5" to 4" about 18" pipe for each section with one 90* bend. Places filter in the OEM location
4. If time permits, 3.5" to 3.5" to 4" 18" pipe for each section with two 90* bends, places filter in the fender well - not keen on this as I am in the PNW where it rains. Alot. And it would take a while to get it fitted - may be able to try it with the filter hanging out somewhere
No tuning will be done, but hopefully I make some power!
Too bad you don't have a 6" section right off the TB in a smaller 3" to see what that does with one of these configurations. In theory this should speed up the velocity further right before it enters the manifold, and has shown to produce favorable results.
02-02-2018, 12:09 PM
#274
Dyno time is booked for tomorrow afternoon and fortunately the shop is allowing me to make changes on the dyno within the hour.
I'll be able to provide numbers for the following:
1. Baseline stock AP1
2. Throttle body to 3.5" to 3.5" about 18" pipe for each section with one 90* bend. Places filter in the OEM location
3. Throttle body to 3.5" to 4" about 18" pipe for each section with one 90* bend. Places filter in the OEM location
4. If time permits, 3.5" to 3.5" to 4" 18" pipe for each section with two 90* bends, places filter in the fender well - not keen on this as I am in the PNW where it rains. Alot. And it would take a while to get it fitted - may be able to try it with the filter hanging out somewhere
No tuning will be done, but hopefully I make some power!
I'll be able to provide numbers for the following:
1. Baseline stock AP1
2. Throttle body to 3.5" to 3.5" about 18" pipe for each section with one 90* bend. Places filter in the OEM location
3. Throttle body to 3.5" to 4" about 18" pipe for each section with one 90* bend. Places filter in the OEM location
4. If time permits, 3.5" to 3.5" to 4" 18" pipe for each section with two 90* bends, places filter in the fender well - not keen on this as I am in the PNW where it rains. Alot. And it would take a while to get it fitted - may be able to try it with the filter hanging out somewhere
No tuning will be done, but hopefully I make some power!
02-02-2018, 03:39 PM
#278
Interesting...I would've thought it had more in it. I think for sure though, top off the air box is a reduction in power. I've felt it. Maybe you had your hood open for that test? With it closed it has no choice to suck up hot air. Sounds great though.
02-02-2018, 08:01 PM
#279
Now if you have a working snorkel to get focused direct air from outside up into the radiator plate to the filter, it can work, but not with the stock rad plate in place. Your still going to have trouble in stop and go traffic regardless where moving airflow is minimal. That's where the bumper/fender relocation of the open filter addresses all of it, but then your dealing with other compromises such as being a pain in the ass to service the filter and potential damage/water contamination.
Last edited by s2000Junky; 02-02-2018 at 08:07 PM.
02-03-2018, 07:51 AM
#280
There was a bump in power for about 800 rpm in the midrange with the stepped intake. This is probably better suited for cars which you can tune or with supporting mods. If anyone’s interested in my kit...pics of dyno coming just haven’t had time