1.5TSI EVO Tuning

[BigJase88]

I know it was a while ago but this caught my eye!
The 'guesstimated' engine power is about 40% higher than the measured/calculated wheel power!
That it just not possible - The drivetrain, especially from a new efficient FWD car is not absorbing 53bhp or nearly 40,000watts! of heat!

This is an interesting read:

Puma Race Engines Technical Guide - Transmission Losses - The Last Piece Of The Jigsaw

Puma Race Engines specialise in cylinder head flow development and high performance engine building

web.archive.org

"If you are starting from a wheel bhp figure then you have to apply those equations in reverse - add 10 bhp then divide by 0.9 for FWD"

So the measured 137.6wheel BHP is more likely 164 engine BHP.

Yeah that works out as 30% transmission loss, on a fwd car. Anything to make peak flywheel power look better.

as said car is more likely 160-170bhp with a whp of 137bhp

 

[SuperV8]

I remember back in the day my mate had an Astra Mk2 2.0 GSI with 150hp and that thing was rapid.
Don't know if it's just my perception of 'fast' has slowly changed, or if it actually was fast and just the modern cars with their bloat make 150bhp feel less?

 

[BigJase88]

I remember back in the day my mate had an Astra Mk2 2.0 GSI with 150hp and that thing was rapid.
Don't know if it's just my perception of 'fast' has slowly changed, or if it actually was fast and just the modern cars with their bloat make 150bhp feel less?

It's all power to weight and new cars are safe and fat and heavy

 

[SRGTD]

I remember back in the day my mate had an Astra Mk2 2.0 GSI with 150hp and that thing was rapid.
Don't know if it's just my perception of 'fast' has slowly changed, or if it actually was fast and just the modern cars with their bloat make 150bhp feel less?

The hot mk2 Astra was pretty fast in it‘s day; the 16v version had 150bhp, 144 lb/ft of torque, a 0-60 time of 7 sec and 135 mph top speed. That’s not too shabby by today’s standards either. By way of comparison, the mk3 Escort RS Turbo (the original all white version) was 132bhp, 133 lb/ft of torque, 0-60 time of 8 sec and 125 mph top speed. Both sets of figures from Honest John website.

I really liked the fast Vauxhalls from the 1980’s and early 1990’s. I had a Nova GTE in the early 1990’s. I really wanted a mk2 Astra GTE but couldn’t quite stretch the finances at the time so went for the Nova GTE. It was a bit of a sluggard compared to the Astra GTE (100bhp, 99 lb/ft of torque, 0-60 time of 9.1 sec and top speed 117 mph), but coming from a mk2 1.6 Cavalier it felt fast. I think its size and light weight added to the perception of its speed ?. Really enjoyed owning and driving it though - much more ‘raw’ and old school hot hatch than today’s equivalents.

Apologies for reminiscing and taking this thread off topic....

 

[Adamdunny1995]

Hi new on here guys, been reading these posts after considering a gts box for my Leon 1.5 evo 150bhp! I have decided to bite the bullet and go for it! Only thing put me off was installing it to the car! As some of h said it was tricky! I have fitted dtuk box’s to Ibiza cupra before and managed that so I thought I would give it a go! Anyway thanks for the above posts as it helped me decide! Wish me look!

 

[Adamdunny1995]

Hi new on here guys, been reading these posts after considering a gts box for my Leon 1.5 evo 150bhp! I have decided to bite the bullet and go for it! Only thing put me off was installing it to the car! As some of h said it was tricky! I have fitted dtuk box’s to Ibiza cupra before and managed that so I thought I would give it a go! Anyway thanks for the above posts as it helped me decide! Wish me look!

Race chip arrived yesterday and fitted it today what a bast**d that first connection is! Think I’ve got all the connections right now!

 

[BigJase88]

If anybody else ever wants one i still have my Racechip S sitting in the cupboard.

 

[BigJase88]

@Redahead74

See page 5

 

[BigJase88]

@Redahead74