New owner

[David123]

The only thing VaraRAM does it RAMs it up guys asses when shelling out $400 plus for their junk that is not even designed tested

We find it hard to understand why people continue to believe the marketing hypes of vendors who claim to have a ton of customers have to spend their time soaking the forums selling car owners hype and people buying it.

We have seen countless times when doing custom tunes that every time the car has this product of an ill performing powertrain.

Anyone believing the RAM effect at the nose of the front end needs to look at the C/D, fuel mileage and drag to know no air would be RAMMING into designs such as the Vararam and in fact if you look at its design limits airflow

Worse is cheap design slanted for high profit margins and their claims of performance overhyped.

In this example we look at two Corvettes, one has more overall mods and outputs more HP and Torque yet the captured engine data from feedback sensors such as the MAF prove this product is not what you want to spend your hard-earned money on.

If you look at the results related to airflow between the car with the Vararam and then the other with the Blackwing and our Icebox CAI you see even though the car outputting more performance ( as a CAM where the other does not) is getting less air to the cylinders.

Both C5s are in the same weather, city and elevation

Measured airmass through the MAF
Vararam C5 ------------------------ Blackwing/Icebox

37 lbs/min Max ------------------- 41 lbs/min Max
0.770 grams/cylinder ------------ 0.970 grams/cyl
492 CFM air volume ------------- 590 CFM

The Vararam C5 ran average intake air temps 10–15 degrees hotter than what the weather was, where the Blackwing/Icebox C5 had average temps that equaled the weathers temp

In this case, the Vararam C5 I had custom tuned 1 month ago.
We told the owner what we saw in the OBD collected scanner data as to the performance costs using this product.

Owner contacts us 1 month later that rich DTC error codes suddenly after 1 month tripped.

We had the owner do a testrun with an Ease OBD scanner in record mode and email us the recording to analyze. From that data, we concluded that the Vararam caused the engine to go -14 % too rich.
Owner checks out the Vararam to find what we see is common due to bad design and cheap makeup of their product in that corners of the top and bottom cases do not seal causing the air to divert.

As seen with the lower image below to make this car function correctly we had to tune fuel flow in a odd way in that airflow was poor in some engine loads needing less or more fuel throughout the engine load and RPM range.

View attachment 28296

Image shows the Blackwing/Icebox C5 and how linear the commanded fuel flow is where the Vararam required odd tuning to correct airflow issues but in no way can solve the poor design that causes the cheap airfilters used to break up or the CAI to be ill fitted and cause unmetered airflow that confuses the PCM and how it adapts to this plus the fact hot dirty air from engine bay gets sucked into the leaks.

Interesting thanks

 

[Chevrolet]

That’s where the guy I bought it from got it … he paid near that

You got it for a great price then at £50k (plus buyers premium?) No doubt if Ian Allan had that car now, they would be wanting £70k for it? They had a white 2017 Stingray the other week for £60+k Crazy!

 

[mickn]

Aah! Just read that. Guess I'd be looking on YouTube too, to see what thay say on there? LargeLunchBox on here had a Ian Allan/UK manual GS. Maybe he might "chirp in"?

I bought that car back in February from Largelunchbox having also looked at and driven the car in question in this thread. It was indeed for sale in Yorkshire at that time, lovely car, very eye-catching, I just preferred Large's in the Watkins Glen Grey.

 

[Chevrolet]

I have one of these off my 2017 C7 if anyone fancies it?
Top Down Tech "Window Valet" for 2014-17 C7 Corvettes & 2010-16 Camaros. Plugs into the OBD port enabling you to open and close the windows from outside the car using the key fob. Especially handy if the car is a tight fit in the garage. i.e drive it in with windows down and then close them when you're out of the car. Also has a "window venting" feature to leave the windows down about 1/2 inch for airflow on hot days. Cost £164 from MIdAmericaMotorWorks. Take £80 for it.