We have a large shipment of them arriving July 25th. Most back orders will be cleared out.

 

Will the other backordered parts be avail as well? Thanks

 

If you reach out to our sales team with details on your vehicle and what you are interested in, at info@velocityap.com we can advise on status of individual items.

 

Any updates here? Curious to see times, videos, and commentary on how crazy it is! Currently running the Stage 3 set-up with TCU tune but this Rocky Mountain air is killing my power (originally an east coast car) and need more!

 

Been tied up with a broken coolant fan and a leaking rad so decided to rejig my setup
ready to finally get soma datalogs this week
my chiller and intake temps are awesome
my supercharger lid at operating temp is 20deg less than the average human temperature

 

Rejigged piping
turned chiller upside down and it allowed me to simplify the pipework

 

this will be my oil filter with a welded take of for oil pressure and oil temp guages the gauge pod is due to covered in alcantara

 

Great build progress. The butt dyno feedback is all positive so far. I'm very interested in your real data!

 

Got sidetracked a bit
after replumbing everything I decided to update the rear lights with facelift versions

 

Hi guys,
A quick question please. Can a person simply purchase the larger supercharger and not do an ECU software upgrade. Will the larger supercharger work without doing a software upgrade? Also, can you add the larger supercharger to the motor without doing the pulley upgrades?

Thank you very much

 

you could but I don’t think you will take advantage of gains. Excess boost is limited by factory calibration in layman’s terms

 

Not a good idea at all. I imagine changing a major intake component like that will change fueling and load everywhere in the rpm range. Will your motor survive? Probably, maybe. Modern engine control systems adapt pretty well - I am not sure how the Jaguar ECU's manage fuel trims but my prior modified FR-S operated in "open loop" mode at WOT, the car didn't compensate for fueling and bad things could happen if you run too lean or rich. Maybe the Jag ECUs are smarter, but why would you move to a 2300 without tuning the car?

 

Hi guys,
The reason why I posted my message is because I want to know if I could do a modest upgrade without messing around with the ECU software. Also reading all the various posts regarding pulley upgrades, there's been so many issues with belt slippage and other complication issues, I thought maybe I could avoid doing a pulley upgrade and possibly keeping the engines ECU original stock ECU without an upgrade and simply change the supercharger and get an improvement as a standalone upgrade.

I reached out to Viezu and they responded back to me regarding my question. Here is their answer.


Good morning
Thank you for your message, so to answer your message below, you can install the TV2300 Supercharger without a tune, it will run OK but you won’t see a significant increase in power without ECU tuning.

So the TVS2300 charger comes with a pre-installed pulley – for maximum performance benefit our lower pulley is required to be installed too.

We have seen these reports too, but not with our products. We supply a new, correct sized belt specifically for this application, whereas may others will use the stock belt, or a universal belt.



Let me know your thoughts, if you have any other questions I’m happy to help

 

Belt slippage if it occurs is purely mechanical related response. As I mentioned in my first reply, you will see no gains without ECU tuning. Factory calibrations for any boosted car protect from overboost. You may even experience unexpected negative effects by slapping a TVS2300 without any ECU update.

 

So, yes you can although there is little to no point and it would depend on your other supporting modifications. Harrop originally designed this and tested it with an 80mm upper pulley, at which point you could fit the 2300 directly in place of the 1900, and it will make stock power.

You can then go down in size as small as you like really, but to make more than a 1900 will make you need a 65mm upper pulley and a crank pulley. At which point, you will see belt slippage unless you address the tensioner.

The way the ECU controls the engine, if you introduce mechanically, more boost capability to the system without concurrent ECU tuning the bypass valve will just open earlier/sooner and not generate that boost.