NEW PRODUCT! RIVA Sea-Doo Exhaust Race Plate

[Green Hulk]

NEW PRODUCT! RIVA Sea-Doo Exhaust Race Plate

http://www.4-tecperformance.com/index.php?main_page=product_info&cPath=346_365_3&products_id=14551

Save $14.00 off this product with discount code greenhulk


Our Exhaust Race Plate increases engine rpm (75-150rpm) resulting in more top speed (1-2mph) with correct tuning. The CNC machined T6 billet aluminum spacer installs seamlessly between exhaust manifold and cylinder head. Includes threaded ports for easy installation for EGT sensor in each exhaust port and Bosch O2 Sensor at exhaust outlet, eliminating the need for modifications to cast aluminum OEM exhaust manifold. Block-off fittings are supplied for use when sensors are not installed. Anodized to prevent corrosion and laser etched logo indicates proper orientation when installed. Includes stainless steel hardware and detailed installation instructions.

Key Features:

Increases Engine RPM & Top Speed
CNC machined from T6 Billet Aluminum
Integrated EGT and Bosch O2 Sensor Ports
Plug-n-Play Design Requires No Modifications to OEM Exhaust Manifold
Designed for Supercharged 1503 & 1630 engines.

http://www.4-tecperformance.com/index.php?main_page=product_info&cPath=346_365_3&products_id=14551

Save $14.00 off this product with discount code greenhulk

[ptscon]

Was wondering why no one included EGT ports on these spacers, had to drill my last one.

Has anyone actually logged RPM change after installing a spacer? Thinking of adding one to my new PX but is the painful installation worth the effort.

[smokeysevin]

I am curious how the o2 sensors work being that close to the head. When I was testing a similar placement on my 15f header, the readings fluctuated a lot at lower rpm and loads but that could have been a tune issue as well.

I think aem specifies 12" from the port but that was 5+ years ago when I last looked into it.

Sean

[ptscon]

The single port O2 sensor would call for flow matched injectors in my view. You wouldn't want to end up with a higher flowing injector in that one port and lower flowing ones in the other ports.

[John's truck]

The single port O2 sensor would call for flow matched injectors in my view. You wouldn't want to end up with a higher flowing injector in that one port and lower flowing ones in the other ports.

Single O2 is just taking the average AFR which yeah would require flow matched injectors, assuming all 3 cylinders also get the exact airflow also. But I've always heard that the center cylinder runs leaner. This plate looks like it's still only 1 wideband port and 3 EGT, so you still wouldn't know individual cylinder AFR's.

[1tommygunner1927]

Was wondering why no one included EGT ports on these spacers, had to drill my last one.

Has anyone actually logged RPM change after installing a spacer? Thinking of adding one to my new PX but is the painful installation worth the effort.

I cannot confirm rpm gain as I added an earlier version of the spacer on Turbo Tuesday!!! I added it to run 3 O2 sensors.

[John's truck]

Correction, with this plate you would know front cylinder or rear cylinder AFR, not an average of all 3

[1tommygunner1927]

I am curious how the o2 sensors work being that close to the head. When I was testing a similar placement on my 15f header, the readings fluctuated a lot at lower rpm and loads but that could have been a tune issue as well.

I think aem specifies 12" from the port but that was 5+ years ago when I last looked into it.

Sean

It is not the ideal position for O2 sensors but it does function well enough using Bosch 4.9 sensors. Heat and exhaust back pressure (turbo) will begin to affect lambda readings (recording richer than actual) around 7K rpm and higher.

[ptscon]

The Bosch LSU ADV sensor, pre-turbo version, can handle more heat than 4.9 but they're expensive and require a controller that supports ADV since its not backwards compatible with LSU 4.9

[1tommygunner1927]

The single port O2 sensor would call for flow matched injectors in my view. You wouldn't want to end up with a higher flowing injector in that one port and lower flowing ones in the other ports.

The EGT probes will record different exhaust temps per cylinder; to be used for adding or subtracting fuel in combination with ignition timing and knock. Injector Dynamics will/can provided matched injectors. They even serial number their injectors.

[1tommygunner1927]

The Bosch LSU ADV sensor, pre-turbo version, can handle more heat than 4.9 but they're expensive and require a controller that supports ADV since its not backwards compatible with LSU 4.9

Voltage required seems to be out of range for our application. The LSU 4.9 functions well enough and long enough for our needs.

[1tommygunner1927]

NEW PRODUCT! RIVA Sea-Doo Exhaust Race Plate

http://www.4-tecperformance.com/index.php?main_page=product_info&cPath=346_365_3&products_id=14551

Save $14.00 off this product with discount code greenhulk


Our Exhaust Race Plate increases engine rpm (75-150rpm) resulting in more top speed (1-2mph) with correct tuning. The CNC machined T6 billet aluminum spacer installs seamlessly between exhaust manifold and cylinder head. Includes threaded ports for easy installation for EGT sensor in each exhaust port and Bosch O2 Sensor at exhaust outlet, eliminating the need for modifications to cast aluminum OEM exhaust manifold. Block-off fittings are supplied for use when sensors are not installed. Anodized to prevent corrosion and laser etched logo indicates proper orientation when installed. Includes stainless steel hardware and detailed installation instructions.

Key Features:

Increases Engine RPM & Top Speed
CNC machined from T6 Billet Aluminum
Integrated EGT and Bosch O2 Sensor Ports
Plug-n-Play Design Requires No Modifications to OEM Exhaust Manifold
Designed for Supercharged 1503 & 1630 engines.

http://www.4-tecperformance.com/index.php?main_page=product_info&cPath=346_365_3&products_id=14551

Save $14.00 off this product with discount code greenhulk

Does this mean Riva Maptuner will now log EGTs via their egt probes?

[smokeysevin]

Good point, I was using the 4.2 sensors.

Sean

[ptscon]

Does this mean Riva Maptuner will now log EGTs via their egt probes?

Would be awesome if the Maptuner logging app had a configuration section where you can log custom can-bus data. Then simply use any egt->can controller to inject the EGT data onto the can-bus and Maptuner would log it.

Doesn't look like the talked about Motec update will ever get released so I'll be passing on that for now. Having EGT logging ability with Maptuner would be a nice feature to have for sure.

[1tommygunner1927]

Single O2 is just taking the average AFR which yeah would require flow matched injectors, assuming all 3 cylinders also get the exact airflow also. But I’ve always heard that the center cylinder runs leaner. This plate looks like it’s still only 1 wideband port and 3 EGT, so you still wouldn’t know individual cylinder AFR’s.

Would be awesome if the Maptuner logging app had a configuration section where you can log custom can-bus data. Then simply use any egt->can controller to inject the EGT data onto the can-bus and Maptuner would log it.


That would be awesome.....hope it happens.

Doesn't look like the talked about Motec update will ever get released so I'll be passing on that for now. Having EGT logging ability with Maptuner would be a nice feature to have for sure.

I think the update for MoTeC is a short time away. Suggest you go to the motec website, then to the forum section for questions/answers.