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Forum: General Q & A

07-09-2025, 03:07 PM

Replies: 36

Too much fuel on idle with Whipple supercharger system

Views: 4,032

Posted By Mankka

Thank you for your reply. TPS is set...

Thank you for your reply.

TPS is set correct with Whipple install manual. TPS is also checked actually couple times and it is correct. TPS is now .55v.

I have intercooler. We tested to block...

Forum: General Q & A

07-09-2025, 12:42 PM

Replies: 36

Too much fuel on idle with Whipple supercharger system

Views: 4,032

Posted By Mankka

I don’t have any laptop software or scanner. That...

I don’t have any laptop software or scanner. That is one problem. Next week a guy from boat repairing shop will came and scan the engine. Then we know for sure that all sensors work as they should....

Forum: General Q & A

07-09-2025, 12:33 PM

Replies: 36

Too much fuel on idle with Whipple supercharger system

Views: 4,032

Posted By Mankka

https://cimg1.ibsrv.net/gimg/www.offshoreonly.com-...

https://cimg1.ibsrv.net/gimg/www.offshoreonly.com-vbulletin/2000x1504/img_1778_4379d507e5386d0088f749bda0ecb8db10091f83.jpeg
This is how wet spark plugs are in cylinders 1 and 2. ...

Forum: General Q & A

07-09-2025, 12:18 PM

Replies: 36

Too much fuel on idle with Whipple supercharger system

Views: 4,032

Posted By Mankka

https://cimg5.ibsrv.net/gimg/www.offshoreonly.com-...

https://cimg5.ibsrv.net/gimg/www.offshoreonly.com-vbulletin/1500x2000/img_1522_04f1d1af4a5adea4bf7018845ea252c1d8f39a65.jpeg
One photo about my boat project.

Forum: General Q & A

07-09-2025, 11:54 AM

Replies: 36

Too much fuel on idle with Whipple supercharger system

Views: 4,032

Posted By Mankka

Whipple did reflash my orinal one. I am located...

Whipple did reflash my orinal one. I am located in Finland.

Forum: General Q & A

07-09-2025, 11:41 AM

Replies: 36

Too much fuel on idle with Whipple supercharger system

Views: 4,032

Posted By Mankka

I have contacted Whipple. First they said that...

I have contacted Whipple. First they said that drop fuel pressure. It is not possible with cool fuel systems original fuel pressure regulator.

Today Whipple was quessing that I have wiring issue...

Forum: General Q & A

07-09-2025, 11:32 AM

Replies: 36

Too much fuel on idle with Whipple supercharger system

Views: 4,032

Posted By Mankka

I just taked closer look about injectors....

I just taked closer look about injectors. Impossible to see them. Impossible even take a photo of them when kit is installed to motor.

Actually there was quite a lot wiring job. Had to install...

Forum: General Q & A

07-09-2025, 10:35 AM

Replies: 36

Too much fuel on idle with Whipple supercharger system

Views: 4,032

Posted By Mankka

Thanks for idea. I haven’t. Injectors was already...

Thanks for idea. I haven’t. Injectors was already installed to kit by Whipple. I did not check them before installing supercharger kit to my boat. Now it is hard to take injectors off from the kit...

Forum: General Q & A

07-09-2025, 08:27 AM

Replies: 36

Too much fuel on idle with Whipple supercharger system

Views: 4,032

Posted By Mankka

Thank you for you all that have comment to this...

Thank you for you all that have comment to this topic.

Yesterday we unplugged 3 of 6 Whipple fuel injectors. We did idle engine with 3 injectors and the idling was really nice. Engine also did...

Forum: General Q & A

07-04-2025, 04:30 PM

Replies: 36

Too much fuel on idle with Whipple supercharger system

Views: 4,032

Posted By Mankka

I think that there is only one fuel pressure...

I think that there is only one fuel pressure regulator close to the alternator where is fuel pump and fuel filter.

Fuel pressure is 41 PSI on idle with vacuum and with out wacuum 43 PSI. I did...

Forum: General Q & A

07-04-2025, 04:06 PM

Replies: 36

Too much fuel on idle with Whipple supercharger system

Views: 4,032

Posted By Mankka

Yes, that it is. And yes it is designed to work...

Yes, that it is. And yes it is designed to work with factory fuel system.

Forum: General Q & A

07-04-2025, 03:40 PM

Replies: 36

Too much fuel on idle with Whipple supercharger system

Views: 4,032

Posted By Mankka

I ordered supercharger system straight from...

I ordered supercharger system straight from Whipple.

350 Magnum MPI 05-08 (ECM 555) SC Kit
Finish: Black
SCP: 4.0"

350/377 Oil Cooler kit (2" x 16" oil cooler, 2" clamps, 8AN fittings/hose,...

Forum: General Q & A

07-04-2025, 01:15 PM

Replies: 36

Too much fuel on idle with Whipple supercharger system

Views: 4,032

Posted By Mankka

Of course. I have installed Whipple...

Of course.
I have installed Whipple supercharger kit for 350 MAG and 350 black scorpion. I purchased kit direct from Whipple. I also installed oil cooler. 350 Magnum MPI 05-08 (ECM 555) SC...

Forum: General Q & A

07-04-2025, 12:47 PM

Replies: 36

Too much fuel on idle with Whipple supercharger system

Views: 4,032

Posted By Mankka

Is it possible to adjust Mercruiser original...

Is it possible to adjust Mercruiser original Weber fuel regulator?

Forum: General Q & A

07-04-2025, 08:59 AM

Replies: 0

MSD iginition control problems with Mercruiser 350 MAG MPI

Views: 407

Posted By Mankka

MSD iginition control problems with Mercruiser 350 MAG MPI

I installed MSD 6M-2L ignition control (6560)to my Mercruiser 350 MAG MPI. I installed at the same time MSD Blaster coil. I have new Whipple system and ECM tune by Whipple. Now my engine idle better...

Forum: General Q & A

06-27-2025, 12:56 PM

Replies: 36

Too much fuel on idle with Whipple supercharger system

Views: 4,032

Posted By Mankka

Yes, I did send email to Whipple today. But I...

Yes, I did send email to Whipple today. But I thought that you guys on this forum have also a lot of experience and knowledge.

Forum: General Q & A

06-27-2025, 12:20 PM

Replies: 36

Too much fuel on idle with Whipple supercharger system

Views: 4,032

Posted By Mankka

Yes it is. Complete kit from Whipple and ECM...

Yes it is. Complete kit from Whipple and ECM retune by Whipple. Injectors are from Whipple kit.

Forum: General Q & A

06-27-2025, 11:15 AM

Replies: 36

Too much fuel on idle with Whipple supercharger system

Views: 4,032

Posted By Mankka

Too much fuel on idle with Whipple supercharger system

I have installed the Whipple supercharger system to my Mercruiser 350 MAG MPI but I need you guys help for trouble shooting.

Engine runs poorly and it seems to get too much fuel on idle. Engine...

Forum: Electronics

04-24-2025, 12:24 PM

Replies: 0

Mercruiser 350 MAG MPI ECM

Views: 1,331

Posted By Mankka

Mercruiser 350 MAG MPI ECM

My original ECM is 8M2015856. Does anybody know that will 8M200229 work in my motor. Both these ECM are for 350 MAG MPI and the couplings are identical.

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