Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: RobEVo5 on October 25, 2006, 04:34:50 PM

Title: What boost you guys/girls running on stock twins and injectors ?
Post by: RobEVo5 on October 25, 2006, 04:34:50 PM
Sorry yet another post and question, but they are all related in a way.

I am currently running 10psi (stock I believe), and injectors running 75% duty

I am hoping for 12psi or possibly more from the stock injectors. once my Apexi AVCR turns up and of course map tweaked as well.

I do have non sequential, catback, HKS mushrooms, Air pump removed, Greedy Elbow, front mount.

Even better still would be a before and after dyno figure from 10psi to say 12psi. I appreciate I could only use this an approximation, but guessing it should see me another 20+bhpRWHP on whatever my current base is.
Title: What boost you guys/girls running on stock twins and injectors ?
Post by: Warthog on October 25, 2006, 04:46:05 PM
I ran up to 1.4 bar( about 450bhp at the fly ), BUT I had done a hell of a lot of modding so they could take it. All the modding I did was with the view that I would be going single turbo at a later stage and it was all things I would need later anyway. So when I did make the jump to hyperspace the cost had been spread over a long time, and I\'d had fun with the twins. Nothing like being blown away by twins.:Ladys-man
Title: What boost you guys/girls running on stock twins and injectors ?
Post by: G@NDY on October 25, 2006, 05:03:53 PM
Stock twins (non sequential), stock injectors. I was running 0.9 bar and was seeing 93ish% injector duty. I think that could be the limit. Before upgrades

HTH:WaveBye
Title: What boost you guys/girls running on stock twins and injectors ?
Post by: ScuttleRX on October 25, 2006, 05:05:54 PM
Quote from: WarthogI ran up to 1.4 bar( about 450bhp at the fly ), BUT I had done a hell of a lot of modding so they could take it. All the modding I did was with the view that I would be going single turbo at a later stage and it was all things I would need later anyway. So when I did make the jump to hyperspace the cost had been spread over a long time, and I\'d had fun with the twins. Nothing like being blown away by twins.:Ladys-man

Blimey that was on stock injectors?!

As a very rough guide, on the rolling road at rotorstock one year, I had 272 on 0.9 bar, and 305 on 1.05bar. The figures were meant to have been quite inaccurate but difference between the two gives you an idea of the difference.
Title: What boost you guys/girls running on stock twins and injectors ?
Post by: G@NDY on October 25, 2006, 05:08:59 PM
They say that its generally a 30bhp rise every 0.1 bar increase
QuoteI had 272 on 0.9 bar, and 305 on 1.05bar
So those figures are bob on:)
Title: What boost you guys/girls running on stock twins and injectors ?
Post by: Warthog on October 25, 2006, 05:10:56 PM
The injectors were stock prime, 1300cc secondary, as I said it was very well modded, sorry should have explained in relation to post.
 Stupid boy Pike.:spank
Title: What boost you guys/girls running on stock twins and injectors ?
Post by: ScuttleRX on October 25, 2006, 05:12:15 PM
Lovely jubbly :) I think it was accurate in a relative sense, but heard of load of people got widely different figures than what they usually get.

It had been flywheel corrected so that is probably where inaccuracies lie.
Title: What boost you guys/girls running on stock twins and injectors ?
Post by: ScuttleRX on October 25, 2006, 05:13:53 PM
Quote from: WarthogThe injectors were stock prime, 1300cc secondary, as I said it was very well modded, sorry should have explained in relation to post.
 Stupid boy Pike.:spank

:chat lol, thought so just making sure, was going to ask how the ...... otherwise:)
Title: What boost you guys/girls running on stock twins and injectors ?
Post by: AshRX on October 26, 2006, 11:08:17 AM
850cc all round, and 1.15 bar with 75% injector duty - Thanks to Max @ Re-Worx
Title: What boost you guys/girls running on stock twins and injectors ?
Post by: RAW on October 26, 2006, 12:25:02 PM
Quote from: G@NDYStock twins (non sequential), stock injectors. I was running 0.9 bar and was seeing 93ish% injector duty. I think that could be the limit. Before upgrades
 
HTH:WaveBye

exactly the same as me but with sequential turbos. 300rwhp. :Thumbs-up a nice safe set up from max-could have a gone a bit higher but i opted to play safe.
Title: What boost you guys/girls running on stock twins and injectors ?
Post by: M@r]{ on October 26, 2006, 03:25:40 PM
Ive got stock injectors all round, running upto 93% at 0.75 bar.  300 rwhp