When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Im in the process of installing a MAP Performance/Radium surge tank in my trunk and i was looking for some input/ideas. Ive had a fuel cell custom made from stainless steel that fits where my spare tire was perfectly, no taller so i can run the original trunk mat if i wanted to. This fuel cell is nothing more than a "spare" tank that is plumbed into my filler neck and ran with a e85 pulse pump that i can turn on and off with a covered toggle ive installed next to the traction control on/off switch. I originally put this tank in with intentions of using it for drives that i felt may be a challenge to find e85 however ive found myself using it all the time. Ive got -6 hardline that id like to use from the surge tank to a "line bank" that the fuel pump lines run to along with the feed and returns. Does anyone have any pics of their setups that they are happy with? Anyone have one setup that they would have done different knowing what they know now after using it awhile? Any input would greatly be appreciated.
__________________
So to get this right: your fuel cell can be used to fill back up the oem tank?
Is the fuel cell baffled? If it is then why not use it as your surge tank? Put whatever fuel pump you want in that.
Feed the output of the oem fuel pump to the fuel cell. Have a return back to the oem tank from the fuel cell. Take the output of the fuel pump in the cell and run it to the oem fuel rail. Have the return from the fuel rail empty back into the fuel cell.
I run the radium setup using their "fst-r" (returnless) tank. The FPR is built into the FST-R and it works wonderfully as a setup. The only advantage I can see is that it keeps the tank more towards the center of the car, reducing the chance for fire from a rear end collision. But if you have gas in that fuel cell anyway, might as well use it as a surge tank.,
Yup thats correct, its nothing more than a backup tank.
The cell is not baffled though. I should have had that done, i didnt think of that. Would that foam they put in cells work as a baffle if i was to stuff that on there? The rear end collision is a concern that ive been thinking about addressing. Ive thought about making somewhat of a "firewall" behind the backseat in the gap behind the battery and washer tank. I dont think it has to be much to help anyways, something like a well cut and thin stainless sheet to keep the fuel from splashing up into the cabin would go a long ways. One other question ive got on this. Would you be able to have the FPR in the trunk or is that getting to far down the line? Maybe im missing something but id have to think that would be ok. The reason id like to do that is id like to have it all in one place. Im thinking ill put the Radium tank in the right top corner of the trunk and run studs from it through the body, holesaw out the canister size in the trunk foam and carpet, run hard line from it to 4 separate bulkhead fittings in the front of the spare tire compartment and call it good. I tend to over think this kind of stuff but then again i tend to regret doing it one way and not the other once ive completed these little projects too.
Yup thats correct, its nothing more than a backup tank.
The cell is not baffled though. I should have had that done, i didnt think of that. Would that foam they put in cells work as a baffle if i was to stuff that on there? The rear end collision is a concern that ive been thinking about addressing. Ive thought about making somewhat of a "firewall" behind the backseat in the gap behind the battery and washer tank. I dont think it has to be much to help anyways, something like a well cut and thin stainless sheet to keep the fuel from splashing up into the cabin would go a long ways. One other question ive got on this. Would you be able to have the FPR in the trunk or is that getting to far down the line? Maybe im missing something but id have to think that would be ok. The reason id like to do that is id like to have it all in one place. Im thinking ill put the Radium tank in the right top corner of the trunk and run studs from it through the body, holesaw out the canister size in the trunk foam and carpet, run hard line from it to 4 separate bulkhead fittings in the front of the spare tire compartment and call it good. I tend to over think this kind of stuff but then again i tend to regret doing it one way and not the other once ive completed these little projects too.
I have the FPR in the trunk. The return rail from the OEM fuel rail is not used anymore in my application. The fuel rail becomes a dead end.
The advantage of this is supposed to be that you aren't heating the fuel by circulating it through the engine bay. But I'm not sure I by that. However, it seemed simpler and like a logical setup and it works fine for me. You just need to route a boost source to the trunk. (part number and directions for doing this are on the first page of the link below)
If you do this then you want to buy the radium fuel rail with their fuel pulsation damper. Attach your fuel pressure gauge to the fuel rail, and use that gauge to adjust your FPR in the trunk.
Here's the radium fuel rail installed. you can see the fuel gauge as well as fuel pulsation damper on the far left end:
Here you can see my fst setup:
The FPR on that tank is built into the top of the tank. I also installed a fuelab fuel filter. Specifically that part number is 81831-3.
I ran into a crazy issue with a failure of some weather stripping on the wires inside the fst that caused a bit of debris in the system. So that is what prompted the inclusion of the fuelab filter. For more information see here:
