What boost level were you running?
And does it hold the proper boost all the way to Redline?

if its close to 10psi your power seems right on.

When I had the Pettit ECU my A/F ran Rich off the charts, BUT the only time I had a similiar dip was when the Spark Plugs were fouled, So change those first of all.

 

With my mods and the M2 ecu, I'm around 12-13 psi. The person that dynoed my car said that without that dip he thought I would peak around 300whp, which I thought sounded right with the mods I have. Perhaps I'm wrong?

From what I remember I am boosting all the way up to redline. I have since installed the m2 med. i.c. but have yet to really get on it and check how my boost is up to redline.

 

$120 at ATP per hour with wide band. Let me know before you go, I will make sure you won't get over charged.

And $65 is usual baseline rate... Dynodays price $50-55.

Doing midpipe or not, the ECU is tuned to deliver the X amount of fuel at that rpm, and that map reading. No matter what modification you do, other than modifying how the engine flows, it will run too rich. It will missfire, and it will drop power.

 

I was able to hook up a HKS TP and there seemed to be a noticable difference in power - throught the rpm range but most natably in the high rpm range. I wonder if that leaned out my mixture any?

 

It is going to lean out the mixture since it is actually detonating it now rather than just pouring it into your cat to be burned

Glad to hear the Twin Power worked well for you. B&M has a similar device out now for about half of the price and it is rumored so far to offer comparable performance.

 

well I have yet to get back onto the dyno and see where exactly my hp #'s are and what my a/f ratios are at. I should look into the B&M device you are talking about, because that hks sure is expensive.

 

http://www.rx7store.net/index.asp?Pa...ROD&ProdID=810

 

yea I read the description from the rx7store. I like the price but dont like the fact that I have to splice wires , its a PIA. On a side note, it sure is hard to find reviews on upgraded ignitions....

 

The B&M is just a simple voltage amplifier. It increases the 12v from battery to 20v to the coil, so that the coil can produce more power. However, it shortens the coil's life.
HKS twin power is way better technology, it not only amplifies spark energy, it also has capacitor discharge, the performance is not matchable by B&M... You will get what you paid for.
On top of that, HKS has the easy install harness, and its CARB exampt.
Very Important for California guys...

 

thanks OS- I'm leaning towards the HKS TP. In your second to last post, you mentioned that any modification other that engine flow will not solve my rich map- you then believe that an upgreaded ignition will help but I will perhaps still continue to have a rich a/f 's?

 

Yes you will still have over rich mixture on top, but the difference is that you might be able to ignite them now with the Twin Power, instead keeping it unburn, and cause the power drop.

 

So the latest update is that I have installed the HKS TP, and will dyno in the near future. Hopefully we will see some better results. I'll post the dyno sheet once it is done.

 

Yes, you do that - post the dyno results. I have similar problem as you. This weekend I'm replacing the 80k miles stock plug wires and see if it helps any. Then next are some nice catback and HKS TwinPower. If they dont help I'll drive my car off the cliff

I dynoed at around 250rwhp at 12psi.

 

Did you ever get it dynoed with the ignition upgraded ?

I installed a 3" MP and 3" catback and it helped a bit, but now the thing ROARRRRS when 2nd turbo kicks in