{"id":2669,"date":"2024-10-25T11:51:19","date_gmt":"2024-10-25T11:51:19","guid":{"rendered":"https:\/\/alexengineering.pl\/?p=2669"},"modified":"2024-11-11T17:07:54","modified_gmt":"2024-11-11T15:07:54","slug":"mazda-mx-5-na-1-6-90-115km-modyfikacje","status":"publish","type":"post","link":"https:\/\/alexengineering.pl\/en\/porady\/mazda-mx-5-na-1-6-90-115km-modyfikacje\/","title":{"rendered":"Mazda Mx-5 NA 1.6 90 \/ 115 HP - mods"},"content":{"rendered":"


dont have my NA 1.6 for some time, decided to write some of my thoughts of modyfying it I still remember, Maybe someone use it

00. dont be afraid of 90HP version.<\/strong>its not much worse than 115HP version. Usually shows 100-105Hp on dyno, while many of 115HP are below 115


0. spark advance adjustment<\/strong> Mandatory for all NA 1.6 users. Instead of stock 10 degrees set 14. Some give even more but it does not work on every engine). Gain is few Nm on low and mid-rpm and 1-2HP. Too much advance can show HP decrease, you have to do your own testing. Many years ago I verified acceleration time on 2nd gear 3000-6500rpm. Worked. Now there are apps for smartphones to do it.

1. intake mods<\/strong>
both versions have AFM device (identical) that limits flow. Here are measurements and proposed solution:
https:\/\/www.autospeed.com\/cms\/a_110680\/article<\/a>

worth trying
- intake mods, cone air filter
Http:\/\/www.solomiata.com\/DIYIntakes.html<\/a>

possible few HP gain on high RPM, if you install it wisely to let COLD air enter intake

- next step bigger AFM from Mazda RX-7
http:\/\/www.solomiata.com\/airflowmtr.html<\/a>

practically not avaliable at this time. But you can buy MX-6 or Ford Probe device. Mechanically identical as RX-7, different iside. So you have to install MX-5 electronics there. Here is how:
https:\/\/forum.miata.net\/vb\/archive\/inde ... 70157.html<\/a>

some clever ideas needed to install (does not fit stock airbox), adjustment and works

possible another few HP high-RPM gain


2. exhaust mods<\/strong> Havent done. Maybe someone will write ...


3. cams swap<\/strong>especially if you have 90HP version

if you have 90HP swap cams from 115HP immediately. Better in all areas.

install plug and play. Few Nm\/HP gain, after ECU modification another few

more hardcore mod is using MX3 exhaust cam as intake in MX-5. Exhaust from mx-5 115HP

had for a while, didnt worked for me. No torque below 4500 rpm, going mad from 6000 to 7500 (i was afraid to set limiter higher). Probably i screwed something, lots of guys wrote it worked well for them
https:\/\/forum.miata.net\/vb\/showthread.p ... 040&page=6<\/a>

think its worth considering

4. ECU modifications<\/strong>

115HP ECUs cannot practically be modified. You can only overclock them and raise RPM limiter this way. It also affects spark advance and fueling. Very limited

115HP ECU can be used in 90HP car, after modification. But I recommend 90HP ECU remap, below

90HP ECU - there are few versions - has programmable EPROM and can be modified. I raised RPM limiter (6800->7300), modified spark advance. Gain on dyno was not very big (3Nm 2HP) but car had better throttle response. Pleasant for daily driving. If ECU has immo - remap preserves it

more info in thread
viewtopic.php?f=71&t=31652&view=unread#unread<\/a>
<\/p>\n\n\n\n

UPDATE 2023<\/strong>currettly i recommend my ECUs Speeduino PnP NA<\/strong>Much bigger mods possible: fueling, spark, and many more<\/p>\n\n\n\n


5. head shave<\/strong>
potential Nm\/HP gain, especially in case of 90HP version with lower compression (9.0 vs 9.4 afaik)

if you are doing head refreshment or headgasket replace - consider it. I personally havent done this

5. lightened flywheel<\/strong>
due to lowering rotating mass we gain faster RPM rise on low gears

worth considering if you are replacing clutch or gearbox for instance


other useful links
http:\/\/jasoncuadra.fortunecity.ws\/id49.htm<\/a>

good luck!<\/p>\n\n\n\n

\":twisted:\"<\/figure>","protected":false},"excerpt":{"rendered":"

few things you can do to make your mk1 1.6 Miata (slightly) faster<\/p>","protected":false},"author":2,"featured_media":2862,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[50],"tags":[64,51],"class_list":["post-2669","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-porady","tag-na","tag-speeduino","post-wrapper"],"acf":[],"yoast_head":"\nMazda Mx-5 NA 1.6 90 \/ 115KM - modyfikacje - Alex Engineering<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/alexengineering.pl\/en\/porady\/mazda-mx-5-na-1-6-90-115km-modyfikacje\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mazda Mx-5 NA 1.6 90 \/ 115KM - modyfikacje - Alex Engineering\" \/>\n<meta property=\"og:description\" content=\"kilka porad co mo\u017cna zrobi\u0107 by MX-5 NA 1.6 by\u0142a szybsza\" \/>\n<meta property=\"og:url\" content=\"https:\/\/alexengineering.pl\/en\/porady\/mazda-mx-5-na-1-6-90-115km-modyfikacje\/\" \/>\n<meta property=\"og:site_name\" content=\"Alex Engineering\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/profile.php?id=100085299104537\" \/>\n<meta property=\"article:published_time\" content=\"2024-10-25T11:51:19+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-11-11T15:07:54+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/alexengineering.pl\/wp-content\/uploads\/2024\/10\/PICT5484.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"648\" \/>\n\t<meta property=\"og:image:height\" content=\"383\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"alex\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/alexengineering.pl\/porady\/mazda-mx-5-na-1-6-90-115km-modyfikacje\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/alexengineering.pl\/porady\/mazda-mx-5-na-1-6-90-115km-modyfikacje\/\"},\"author\":{\"name\":\"alex\",\"@id\":\"https:\/\/alexengineering.pl\/#\/schema\/person\/8e6a96976c4bdfffbc084d01a7735e65\"},\"headline\":\"Mazda Mx-5 NA 1.6 90 \/ 115KM - 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