Hey.

Has anyone ever bought one of these?

CP02 Tornado chip package Gems Landrover - ACT Performance Products - your source for after market TVR upgrades, components and performance accessories.

Are there any noticeable improvements over stock? 750$ seems like a TON for a measly 10 horsepower. Does it change the entire fuel map to be more responsive and better overall??

I was thinking about getting one until I saw the price... if someone here has one and tells me it's worth it, I might be having a lighter wallet

 

I have recently been in contact with them and with a couple of uk vendors, that sell their service. while it can be a huge improvement in getting the biggest bang out of performance upgrades. their common opinion was that it is not worth the $ if you have not done extensive performance work/upgrades. otherwise you are not really getting that much out of it, marginal improvements. their biggest claim to fame is that is will help alleviate drops in torque, throughout rpm range, less lag and dead spots. this info was relayed to me (a consumer looking to spend money on the best set up) and no one tried to convince me otherwise. also you have to send your ecu to them and wait on it to be sent back.

I was asking in reference to bosch, gems would see a little more advantage as it is not as adaptive. never the less, I'd only look at it as a compliment to other upgrades, not so much a stand alone tuning solution

 

you can get chips for the old fire wire and gems, i believe superchip also put one out. But as dusty said by itself its a lot of money for very little

 

What kind of other mods are we talking here? 4.6 crank/rods/cam type mods, or something more extreme? For the common 4.6 stroker mod, this may be a good way to get 250hp/325+ft-lb out of a 4.0. Only problem is the 4HP22 crapping its pants behind it.

 

Stroke 4.6 with cam you'd see a marginal advantage
More worth it if you open up heads, oversize valves, exhaust mods/headers, dumping more fuel mixture, etc as well

 

It's a 4.0 with 4.6 crank and rods, but 4.0 pistons. I have the head and block shaven a little bit, just enough to get a perfect surface. So Higher compression than normal, with some cnc milled heads (stock valve sizes, but with double HD valve springs, Funny enough I have big springs but no cam yet! )

This engine hasn't even run yet, I still have to put it all together! But when it's done I'll have a TON of pictures and pointers to (hopefully) make this easier for anyone doing this to their own rover, at least that's the goal.

I'll wait and see once this bastard starts to make a big purchase like the Tornado ECU.

Also, The machine shop I have locally can bore out my v8 by .060. I have a pretty good idea to use 305 aftermarket forged pistons with a 3.755 in bore, would this work with a 3.60 cylinder? Or should I go for the 3.765 in bore pistons? I feel like drilling any more than .060 out of the liners would kill them instantly. (I also plan on using a bigger radiator and lower thermostat, so the engine will get less hot and be less likely to drop a liner)

All of that boring and extra machine shop work is optional... I haven't decided yet. Do you think it'd be worth it?

 

The machine shop I have locally can bore out my v8 by .060.

Your local machine shop has already bored Rover blocks to.060 over, because with my fuzzy math your are well into the water jacket at .60 over.

 

Haha Nahh .060, not .60. 60 thou... It's not a lot and it's mostly to let me get forged pistons as well as clean up the bores to new. Not to mention mine are SLIGHTLY out of round!!! Gotta love good ol' rover oval cylinders..

 

.060 is quite a bit

 

you stand to gain more than I would out of tornado, as you are gems, I am bosch.
if your realistic goal is to feel slightly less torque drop, throughout rpm range, and get a bit more throttle response, spend the $700. keep in mind that your less adaptive system is going to be even less adaptive. so if you decide to do a cam swap or changes, you will need to spend another $700. it is not a bad option, but know what you will get. so if you want to go this route, you should get all your stuff like you want it first. (headers, pipes, quad turbo, super charger, ford or some custom five0 injectors, head work, etc) that way you will get to biggest bang.


I have left the idea of tornado, in favor of a fully tunable set up. megasquirt or the likes. it just makes more sense after corresponding with people that know more than me. (again I am bosch and would likely only see a very minimal gain, gems will see more..........still not a ton, but more) with gems I would expect you should shoot for 5-7% overall at the very best (that's an estimate with my stupid-head math based off of their claims of 10%ish on a perfectly matched and tuned set up) if you were 13cu or hotwire and did all the performance upgrades, you'd see the most. that puts you in the middle.