Generation IV Internal Engine - LS2 402 RX7 tuning help

I drove my ls2 402 rx7 for the 1st time today. This thing has alot of TQ. The only problem I am having is that I get knock over 5,000. I have turned the timming down to 25 deg but I still have the problem. Does anyone have a program that would work for my combo. I need one that is from a 01 f-body ecu so i can load it using ls1edit.

402
Ported TEA 5.3 heads
236/236 601/601 115 cam
ls6 MAF that was calibrated but it is still off.
fast 90mm
30lb svo

I am looking for a program that would be close until I take it to the dyno in 2 weeks. I plan on going with speed density on the dyno. Thanks for any help.

Some pics

http://x12.putfile.com/11/32216070070.jpg
http://x12.putfile.com/11/32216061613.jpg
http://x2.putfile.com/11/31512595144.jpg

do you know what kind of power you are makin? and are you possibly maxing out the injectors and makin it run lean. i know ppl with 402s that would completely max out those injectors

thats a nice conversion, whats it sound like with that muffler on it??

Phoenix57 I am hoping for something close to 500rwhp. I think that the 30lb ford injectors should be ok. If I need to I will install some larger injectors.

Thanks

Mike

I would try adding fuel above 5 grand and see if your problem goes away.

Mike, you need bigger injectors! bring me the computer I will set you up with a driving program, I can also do the SD stuff now too, you know that right?

Hey, I'd love to tune this thing for you, are you using a fbody computer for it?

hopefully he doesnt plan on cheating on me, since I did the two cars in his sig :) yes its a F-body computer BTW.

forgot to mention 500 rwhp will be a maxed 30 lb injector 42s the duty cycle will be around 70ish% which is perfect, room to grow, etc.

Nick Thanks for the dyno time on the last motor's. i did not know that you where doing SD tune, that is good news. I ordered some 42# imjectors, I think that I am going to put on some ETP 225 heads before I dyno it.

Thanks for all the info.

Mike

forgot to mention 500 rwhp will be a maxed 30 lb injector 42s the duty cycle will be around 70ish% which is perfect, room to grow, etc.

Man, did I call this one or what Mike?

For the people who weren't there I tuned the car tonight, IPW was right at 70-71% peak horsepower at 12.5 AFR.......

Thanks Nic for the tune, can you email me the dyno sheet so I can post?

489RWHP
464RWTq

Mike I cant pm you back for some reason its messed up, I emailed the files twice, here I just hosted it on my site.....
http://home.comcast.net/~nickn20/MikeRX7/MikeRX7ba.jpg

I have more fix your PMs and I will email them again or send you links....

What PCM and who's wiring harness? Fly by wire, OEM 90 MM Throttle body or cable (FAST or something) stock MAF sensor?

What tuning software?

Please help a fellow Bowtie / Mazda freak!!!

Really impressive numbers!!!!!!!

Awesome curves Mike. Get those new heads on it and see what it puts down. :cool:

LS2 V8 Miata, I am using a 2001 f-body ecu and harness.
90mm Fast intake and TB
Nick used HP tuner on the car and tuned it in SD mode.
Today I put on a 4" intake and made 489rwhp 477rwtq
With the old 3.5" intake I was only making 463rwhp 444RWTQ
So the 4" intake was worth 26RWHP 33RWTQ

Right now I am doing a 2005 gto ls2 into a 280z, it will DBW using the stock TB. I will also be using the stock gto computer.

Drewman, I hope I can make a few more HP with the ETP heads.

Id like to hear how it sounds with that muffler

Id like to hear how it sounds with that muffler

Here is a video of it!

http://videos.streetfire.net/player.aspx?fileid=35C778C6-110F-419C-8372-576E04C5E2C4

lllove the setup ... how much do rx7's weigh?

Hey you just got too much testosterone in that car :burn: haha Thats a kickass conversion