darenorg. We dont have any dyno result for Honda City yet. be we do have our happy honda city customer. anywhere you got PM on the pricing.
Superduper, huge different we dont dare to said. from the dyno result we have. 1 to 3 bhp increase is for sure if you using both VS and GK. 1 to 3 bhp look very much less, but most our customer is statisfied with the performance and money spend for our product.
The major function for VS and GK is not to increase your car performance. is work to stablelize your car electrical current. which mean you will have batter smooth drive, increase bhp and improve torque is an bonus effect for VS and GK. From all the dyno result we can see after install VS and GK, you got much more smooth powerband rather than the stock setting jagged line.
if you see the lamda result. it actually improve your FC after install VS and GK. with condition driver need to remain the same driving style as previous.
We normally recommand customer to get both is their budget allow. else go for VS first as GK will not stablelise your electrical current.