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Check the size of ur front pipes. Theres alot getting around that are tiny 2.5 inc or so. Upgrade if required

Like my ones when I first came for the tune, had 3" HPI dumps going into 60mm then 70mm merge front pipes

Major restriction not to mention added lagggg

Changed to twin 3" to 3.5" merge = winner :)

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That's what id like but atm I've only got a 3" cat so Im not too sure if it's worth it. If i was going to change the front pipe to that diameter id be better off going 3.5" all the way through. Id also be looking at a couple of $ to do all that.

just leave the small exhaust and see how you go, worst case scenario a 2nd tune will set you back a couple more hundred. Once you start changing everything you end up spending more then you need to for little gain. I've seen 2.75inch go well north of 350 on 98, without a doubt it was a major restriction by that power level but that's not say it can't be done.

  • 2 weeks later...

Well I picked up the car yesterday and it made 325rwkw. I ended up going with a set of ID1000's and a walbro 460. The boost spiked to 20psi and tapered back to 16psi as I've still got standard actuators. I was also told that the clearances in my head were a little out so I was down a little on power from that too.

All up I'm very happy with the power it made, especially the mid range torque. Not too bad for the little -7's.

That's the plan eventually. You can tell that it is a little lagier than it should be. Once the rest of the car is sorted and I decide what exhaust and what ever else I'm going with then I'll fit new actuators and get a retune.

At the moment fuel consumption is looking to be around 13l/100. Im running a tank right down atm so i should get a good indication.

Mid range and top end definitely feels better/stronger.

What else? Ethanol is really nice to drive on.

Car hauls ass

Since my car isn't registered I can't really test out fuel consumption at the moment but it feel awesome on the street. There is so much midrange torque. Chris at Racepace said I needed to sort a few little issues before I could make any more power. The main 3 being standard actuators and AFM's. Plus the clearances in the head were a little big so the valves aren't opening fully.

I don't think I'll end up changing anything too soon as I'm pretty happy with how it is. Lets see if there is a high 11 in her.

Since my car isn't registered I can't really test out fuel consumption at the moment but it feel awesome on the street. There is so much midrange torque. Chris at Racepace said I needed to sort a few little issues before I could make any more power. The main 3 being standard actuators and AFM's. Plus the clearances in the head were a little big so the valves aren't opening fully.

I don't think I'll end up changing anything too soon as I'm pretty happy with how it is. Lets see if there is a high 11 in her.

i've got 2 x NIsmo AFM's if you want :D

good to hear you made the switch though, E85 ftmfw!

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