IAF has decided to not to include any new engine swap upgrade under its ” Super-Sukhoi” modernization program and the focus will remain to upgrade them with AESA Radar which will be a derivative of the one used by the Russians on its Su-57E n come equipped with upgraded Avionics pic.twitter.com/kpZ9acdVwj
— Aerodynamics🇫🇷 (@AeroResearch1) April 2, 2020
+on the Su-30MKI with thrust vectoring controls. The Russian air force has decided to swap engines of its entire Su-30SM fleet which is based on Su-30MKI build with AL-41F-1S which is also used on its Su-35 fleet to maintain commonality of the engine n improve its serviceability
— Aerodynamics🇫🇷 (@AeroResearch1) April 2, 2020
+but India was offered engine swap for a different reason n it ws due to ongoing technical issues with the AL-31FP which largely hv bn fixed bt still, sm issues remain unresolved. HAL hs confirmed that orders for 222 units of Su-30MKI which wr locally produced at its Nashik plant
— Aerodynamics🇫🇷 (@AeroResearch1) April 2, 2020
EW system on MKI MLU will be Indian.

And the new engine is required because the old engine cannot provide enough electricity to power all the new electronics being added in, and not just because it can provide additional thrust. If not for this, then the Russians would have upgraded the Su-30SM with Irbis-E right from the very beginning.
So much nonsense being peddled everywhere.