The F119 power modification thread

Actually, without and antiknock sensor, running rich is how you avoid predetonation. The old tuners used to richen the mixture up for their mods then back it down in steps until it knocked, then go back up. This is why we want to upgrade the ECU so we can add an AKS for fine tuning performance.

 

Agreed, fat (rich) is safe. I ran the old engine in my Camaro (@ 10 psi for boost on 10:1 static compression Ratio) @ 11:1 AFR. I could of made more power if I was leaner, but at that time I had stock cast pistons and wanted them to live.

 

My upgrades are complete. My car is running very lean. I have not replaced the fuel pressure regularors. Is the 3.8 bar regulator bulit for the Spyder ? I have a 94 and am looking for ways to make the mixture richer. All suggestions appreciated. Andy

 

Got my knock sensors in and just need to mount my wide-band AFR gauges

Only real way to know where your at




http://www.youtube.com/watch?v=4fOvU-QgXiI&feature=youtu.be

 

Awesome. I'm having a second set of O2 bungs installed in my new high flow cats for just that reason. I'll need to pick your brain on how you're mounting everything.

 

I finished my 348 Modifications. They are:
1. Installed 355 airboxes with silicone hoses.
2. Removed screens in MAF's
3 Ported TB's to 57mm
4 Ported and polished plenum. Ported intake runners
5. Installed larger injectors
6. Installed new chips (two sets)
7. Fabspeed headers
I had previously installed a Magnaflow 14568 two in two out muffler, new exhaust tips and resonated test pipes. My initial dyno was 294 and the final was 305..11 HP gain.

I took the car to Competizone a ferrari specialist for the dyno's and tuning. Fernando Torres one of the owners worked on the car and gave me his insight following my Mods.

Contrary to what has been discussed Ferrari did not leave much on the table. Any gains are going to be small and expensive. There are some mods available without great cost that are worth doing and some maybe not.

I installed the larger injectors. That maybe was not the best choice. When I did the engine was running very rich and it took a lot to get it in tune. I was using the SoCal beta 1 chips. Fernando said that compared to the custom chips that were the result of my tuning that Tim's chips would have been just fine if paired with stock injectors.

The headers on a 348 are a good design. I probably did not gain much with the Fabspeed. The cost was not reflected in the gain. The Fabspeed headers look good and I got a good price so the jury is still out.

Porting the intake tubes was not necessary. Very little material was removed. I would not do that again. Porting the TB's was not expensive and a good gain as well as the plenum.

So, I now have three sets of chips. Stock, Beta 1 and my custom. I would go with the beta 1 and stock injectors. in hindsight. My custom chips are great but it was expensive to get to the bottom line.

I like the 355 airboxes and hoses. Fernando said that if the car had been Dyno'ed with some moving air the result woud have been much more. Standing still it needed air at 7300RPM. I did not change the rev limiter. Tim chips raise it to above 8000+ somewhere. Anyway without cams or internal modifications I think my little engine is modified to my satisfaction. I will post pix as soon I I am finished with the cosmetics of the engine compartment. Andy

 

Interesting information and thank you for doing the work.

Dyno's don't lie, but are you using an internal crossover muffler can?

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Very interesting information, Andrew, although not entirely surprising to me. I did think you'd get more from the headers though, but now that I think about it I'm not sure that particular design is the best. Still a decent result, all things considered. Would love to see pics of the 355 airbox installation.

Thanks for posting.

 

So all in all the best bang for the $$$$ Buck is~

Get the Throttle bodys ported and use the chips I did for you.

Seems simple enough, Thanks for being the first out the gate !!!!!!

 

Andrew, are converters installed on your car and if so, which ones?

 

if you don't mind, can you let us know how much this whole process you mention above cost?
cheers

 

More info needed on these chips

 

Just about what I predicted. My impression is that 300-305 HP on a Dynapak is about the limit. Again, that is about 330-335 HP crank. Next up would be engine management - our Motronics are sheit. Then you have more capacity to tune for your mods. Me, I'm going valves and injectors, plus AKS. Then I will see about getting more air in there.

 

Do you have any sound clips/video of the dyno pull or the car startup/idling/running/driving with this muffler?

 

The design of the 14568 muffler is an interesting one for exhaust systems like our 348s. It's much better than other dual in and dual out mufflers with better bends, it still seems to be less than optimal. I know of one exhaust that has 2 complete U bends inside the can to prevent exhaust from colliding. I wonder how the 14568 does with flow with 2.5" pipes and/or the potential of exhaust flow colliding inside the can. I'm sure it's better than stock and probably better than other ridiculously expensive options.

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Would love to see the dyno sheets either via email or here
I get excitement looking at them

 

Have an extra set if your interested

http://www.ferrarichat.com/forum/ferrari-parts-collectibles/524417-348-challenge-modded-ecu-chips.html#post144731209

 

Got my ported TB's today
Will give them a go this weekend with this combination

stock headers
port matched intake
ECU beta1 chips
Adjustable fuel rails

This is the last test before with a stock configuration

Next test will be ITB's Individual Throttle bodies from the 355.
Dual 355 air boxes from a 2.7 car or the huge 360 air box
Stand alone ecu, megasquirt.


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Nice Tim.

 

Tim, will you be able to do before and after pulls to determine the specific gains from the ported TBs? Also, what exhaust configuration are you running (beyond the stock manifolds)?

 

What happened to the big momma manifold thing?

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No, others have done that to death. The TBs add 4-5 hp however give greatly improved powerband and throttle response.

Port matching a stock intake manifold. I think minimal gains are to be had with a full porting job. The manifold looks like it was made more for throttle response rather then all out power in a race environment. As the entire intake system.

Exhaust, Stock headers with stock single can exhaust stock cats. I have not seen any real data "apples to apples" any aftermarket mass produced header alone singularly adds anything to the game. To the contrary I have seen the opposite.

I am not looking to try to beat out top HP sacrificing real driveable HP and torque. It's not a 1/4 mile car it's driven on the street.

Now I am using a w4d mustang dyno room with air flow simulation so all the old data no longer is a base.

 

It's a secret

 

I've only seen one reported test and no dyno sheets to go along with it so my own personal jury is still out.

Same here.

 

I'm just going to verify results others have had with the ported TB's, maybe make a few adjustments to the chips to dial the package in a little better then on to the ITBs.
Please don't take it the wrong way, I wont be sharing any of my dyno sheets as every car is different and I do it for my own satisfaction. I will post a summary. Only my hairdresser will know for sure LOL

Nothing more I like then tweaking a motor