performance loss noticed in 4th and 5th full throttle

[Matt Wollen]

I have had my first rx7 since february and brought it off a gentleman named rob matthews in redruth. Unfortunately i have had to have the engine rebuilt but it hasnt put me off because the car is absolutely mint. I had the engine built at super 7 autos in brighton and am currently running it in for 400 miles now. I havent taken it over 6000 rpm yet but in 4th and 5th under full throttle and coming into the secknd turbo after a second or two starts to misfire and trying to charge again. It seems to be ok in 1st 2nd and 3rd but havent gone over 6000 rpm yet. Any ideas on what this could be? Thanks

[m1tch]

Its probably the secondary boost solinoid, they usually has issues, surely you shouldn\'t be going onto boost whilst its running in though?

[Brett]

Hi Matt,

You really shouldn\'t be running the car hard at all in the running in period, if there is an issue then fair enough, but you are risking premature failure by hard driving at this early stage.

Give Jason a call.

[HaywardRotary]

Best to talk to Jason as he has set this up and no doubt he will still have to tune it!
Dont rev it hard till it has been mapped by him.
I am sure he will be able to sort after run in.
No fresh engine can be run hard to tune it until run in.

[Matt Wollen]

Thank you for your replies, the post i wrote was on my phone and was meant to say before i had the engine rebuilt it was doing that under full throttle rather than using full throttle after the build. I have also noticed that after the rebuild the idle progressively is getting higher. It was running at about 1,200 - 1,300 rpm when i got home from brighton. Jason said it was because of the compression getting better that this is the reason why it is happening. He told me to adjust it using the screw, which is near the lower throttle body elbow??? I have had a look to find it but am not confident enough to start moving screws that i am not sure of. Either way i could of lived with that until taking it back for the service at 1,000 miles. But the other day it started hunting at idle rather than being constant and revving up to 2,000 rpm. Is that signs of a vacuum leak or if someone could show me exactly which screw i need to turn with a dummy diagram for example i would be most grateful.