That would be awesome. A mistake I made was not gathering as many as I could during research.

x-chr

 

The one shown works very well and only uses one filter. The only change I would make is to duct air thru the head light instead of the fog light, but this is a dedicated track car

If your system is for the Vantage please do - very interested.


x=chr

 

Hello,

Here are my tests at the beginning of my preparation for my Vantage.
- The blue curve is the power that I had when I bought it. It was very hot but I was really disappointed with the little power.
- The purple line is the displayed power tested on the site of Supersprint
- The red curve is the power after replacing the intake manifold, catalyst and air boxes, all by Bamford Rose.

We see that Mike pieces on the car really improved from 4000 rev / min.

All my tests are done on the same dyno with the same operator.

I hope that my explanation is clear

 

4.7 liter vantage.
All same dyno. Low reading dynapack

Base line 338 whp stock
355whp with rsc filter and cats, tubi muffler
377 whp with filters, cats, tubi muffler, velocity ap headers, vap x-pipe, vap twin plate clutch

Car is actually quiter than when i had race cats and oem exhaust on crusing.
During wot damn that noise is intoxicating. Higher pitched and smooth the perfect aston sound.

I have added vap software and will post all results in near future after final dyno.

 

Thanks for posting. The one below is interesting. Common to both are low restriction cats. Anecdotally they both have improved scavenging.

1) If I understand Bamford Rose, I would not expect they changed the ECU except to support the air box. Graphs I have seen do not show an increase in mid-range torque with the addition of the boxes.

2) If I understand Fabspeed, they did not modify the ECU.

If the above is true, it appears the stock system does not expel as well as it could and some mid-range torque can be had with improved scavenging.




Kind of makes sense - Bamford Rose quantifies expected gains of each exhaust component on their website.

This one has a header and there is some separation after 4000. It confuses me because it says flywheel and stock power shows 335. Perhaps a 4.7 and "Flywheel" is mis-labled?




Would be of interest if someone could post up the original graphs of the Eurocharged tunes with stock hardware. I can't seem to find them right now.

I have header, x-pipe, and sport exhaust ordered and will try deleting the air boxes. Have a tune ordered and will add it last.

Not sure it is worth dyno-ing each component based on the info posted on BR website though it would be interesting to see how well it correlated.

Build it, test it, publish it, and sell it seems fair.

chr

 

"1) If I understand Bamford Rose, I would not expect they changed the ECU except to support the air box. Graphs I have seen do not show an increase in mid-range torque with the addition of the boxes."

ECU is OEM on my dyno, no modification

 

Vince - do you happen to have plots of AF ratio for the above?

x-chr

 

Perfect, 0.87

 

Did a final Dyno with the tune. I ended up at 389 WHP with VAP tune. Will post dyno.

 

This is in line with where I am with the same mods. I have a 4.3 and was 375 WHP at 96 degrees and 88% humidity. I want to get another dyno done in the cooler weather not that I have removed more unsprung weight.

Its incredible how much power comes out of freeing up the exhaust, lightening the FW and a good tune.

 

That's pretty good. 338WHP would give you a 0.8047 conversion value to get 420BHP at the crank, stock. 389/0.8047 would indicate 483BHP crank, that you are making now. That's pretty respectable.

 

Stuart,

Car sounds awesome feels much faster. I guess its safe to say a full bolt on Vantage will get around 45-55 BHP increase for both the 4.3 and 4.7 models.

The x pipes really make the car civil although it has full exhaust. I think I can run muffler delete as long as I have the x pipe if I wanted more sound. Currently on tubi race mufflers.