GRS Front Mount Results

[BigShow]

Well after a day of testing to see whats what, we finally have 2 sets of figures by comparing a dyno run using the GRS TMIC and one with the GRS FMIC under very similar conditions i.e. 11C ambient and as close to the same atmospheric pressure as possible.

Whilst I was personally expecting the FMIC to beat the TMIC by some margin, what I hadn't taken into consideration was how much air the M45 supercharger can flow. By increasing the volume of the IC up to 8 litres there is a greater volume of air for the supercharger to process - but sadly it can only process so much and it therefore hits a peak flow wall. To therefore get more cold air into the engine I'd either need to change the M45 supercharger to something like a Rotrex or possibly upgrade to a turbocharger to make the most of the FMIC.

As a result the maxium boost we could achieve was 14.4 psi with the FMIC as against 16.2 psi with the TMIC.

To give you a comparison, when the car hit a peak of 282 bhp/214 lbs ft previously, the ambient was 8C, with much better atmospheric pressure conditions and it gave a peak boost of 16.9 psi.

So the results now look like this:



As you can see, the car has picked up torque with the FMIC and has shifted the peak power to earlier in the rev range giving far superior mid-range grunt and boy do you feel it on the road.

The best bit however is that this power is now useable all the time... no more temp clipping which robs vital power and again this is noticable on fast road blasts. It feels like the car is on a constant diet of Red Bull, it never gets tired as the inlets temps rarely go over 30C.

So whilst we haven't broken any records in terms of bhp, we have only lost 6.1 lbs ft of torque from the cars 214 lbs ft best, so I'm very happy with the results as I'll never have to look at the ScanGauge again and whince as I see the inlets temps climbing north of 60C! Nor will I ever have to worry about sitting in traffic, as now the inlet temps actually drop when you're stationary thanks to the engine fans* drawing cold air through the FMIC.

So thanks again to Graham from GRS and to Paul and Chris from 1320MINI for all their hard work.... I'm off for a blast through MK

* By removing the air-con, the ECU keeps the engine fans running constantly whilst the engine is on. Bonus if you ask me

[Aberdeen Al]

Good write up there Ben and tbh some good figures too - well done all involved

[Jaw_F430]

Fit a TVS charger that can flow more and see the gains of the FMIC!!!

So what is the final spec of the car now Ben?

Good work to all involved



P.S Ben you should of bought a N/A car that is quick out the box

[Jaw_F430]

Good write up there Ben and tbh some good figures too - well done all involved

Your inbox is full

[Ruskins JCW]

Good write up Ben

[R99]

Nice write up, and a cracking result by the sounds of things.

[Jove]

A+

[keano]

Nice write up there Bigshow - some very interesting results

[MiniPetrolHead]

Nice results ben. was this with a 17% pulley i take it? When are you going to up that to a 19%? I would be interested to see what happens with that!!

Alex

[lordf]

more power of less boost = mission accomplished (i would love to see that this would do with a TVS / Rotex or Opcon)